Dover-Thank Goodness for Brad Keselowski

The Drydene 400 from Dover proved to be a historic event as Alex Bowman led Team Hendrick to a 1-2-3-4 finish. It was only the fourth time in the 72-year history that a race team swept the top four positions. Additionally, Bowman’s winning pass was a result of the 48 team busting off the fastest pit stop of the 2021 season to win the race off pit road. Restarting from the favorable outside pole, Bowman then blasted into clean air to lead the last three runs for the final 92 laps and the win.

It was some kind of race.

Hendrick drivers went to the front for seven of the ten lead changes and led all but 18 of the 400 laps. “Butt-kicking” was the most common description used for the race.

Although I watched the FS1 coverage of the race, I had trouble getting a feel for it. The booth gushed over the race, but once when coming back from commercial you hear Mike Joy lead with we’re showing the best race on the track for position 16. It makes you wonder.

For us who couldn’t attend and have to rely on the broadcast, I believe that a good broadcast can’t make a bad race good, but bad coverage can make a good race bad. Heaven help you if you have bad coverage of a bad race.

So what was it Dover?

Besides being historic, was it a competitive race?

I spent the first part of the week listening to the various SiriusXM programs to try to get a better perspective. I heard broadcast after broadcast that seemed to be trying really hard to convince the listeners that it was a good race. While listening, I turned to the NASCAR Loop data to try to get more clarity. I realize numbers never tell the whole story but NASCAR gathers data for a reason. What did their numbers show for Dover?

Green Flag Passes

NASCAR Loop data reported 659 Green Flag Passes or 1.8 GFP per green flag lap. This is the lowest number of Green Flag Passes over the last twenty Dover races and even less than either of the COVID shortened double-headers last season, which were 89 laps shorter. The race with the next lowest Green Flag Passes was the 2015 AAA 400, which had 856 Green Flag Passes.

Quality Passes

NASCAR defines Quality Passes as Green Flag passes for positions in the Top 15 positions. Sunday, 295 of the 659 Green Flag Passes were Quality Passes. This means that 45% of the Green Flag Passes took place in the Top 15 positions. With the Top 15 positions making up 40.5% of the positions in the 37 car field, this means that passing was not evenly distributed throughout the field but instead saw more passes taking place near the front of the field.

Lead Changes

Moving to the very front, this race had a total of 10 lead changes among five drivers, with the Top Three driving for Hendrick. Compared to last year’s double-header races, each of which were 89 laps shorter than Sunday’s race had 15 lead changes each.

Caution Flag Lead Changes

The 2021 race had nine lead changes during the seven caution flag periods. On the surface that sounds like an exciting time on pit road until you take a closer look. The last two cautions saw Bowman stay on track to maintain track position. On the remaining five cautions, eight of the nine lead changes were a result of which side of the Start/Finish Line the leader pitted on. William Byron and Kyle Larson pitted before the Start/Finish line and relinquished their leads when they pulled in the pit stall and Martin Truex, Jr., Denny Hamlin and Bowman passed them to get to their pit stalls past the Start/Finish Line. Pit stall positions created eight of the nine lead changes under caution.

Kyle Larson’s lead change on Lap 38 was a result of Larson’s team winning the race off Pit Road. Bowman’s winning lead change was actually a Pit Position Pass as he took the lead from Larson when Larson brought the field onto pit road and relinquished the lead when he pulled into his pit stall before the Start/Finish. Bowman continued to his stall beyond the Start/Finish line to take the lead and then his crew busted off the fast pit stop to allow him to retain that lead which he never relinquished.

To put all this in perspective – if nothing changes but Byron and Larson pitting past the Start/Finish, there would have been two caution flag lead changes. This further shows Team Hendrick’s domination of the race as no other team could best them on pit road.

Green Flag Passes for the Lead

If a driver passes another for the lead at one of the numerous scoring loops, that registers as a Green Flag Pass for the Lead. This race had 1. This means that there was no back and forth battles for the lead. In this case, once Byron passed Truex, Jr. that was it.

Green Flag Lead Changes

Sunday’s race had one green flag lead change. This took place at lap 16. The remaining 343 green flag laps saw no green flag lead changes, even with seven restarts that bunched the field and provided the best chance for changes up front.

This also shows Team Hendrick’s domination Sunday as once they got the lead on lap 16, we saw no other team pace the field for the remaining Green Flag laps – a pretty good indicator of a team butt-kicking.

Racing Lead Changes

Sunday’s single green flag lead change was a result of racing pass. This is just an old-fashioned one driver takes a lead from another. No restart. No leader pitting from the lead. One driver passing another. William Byron used lapped traffic to get the only green flag lead change on lap 16. After that, whichever Team Hendrick car was in the lead when the green flag dropped, held it to at least the next caution.

Those Valuable Stage Wins

We hear how with Stage Racing, drivers race ever lap to get those valuable Stage Points and Stage Win points. With Stage Racing, they “get up on the wheel” to try for the Stage wins.

Kyle Larson won Stage One leading the final 80 laps of the Stage. He won Stage Two leading another 68 laps. Bowman led the final 97 laps for the win. Domination.

What Does the Lead Change Summary Show?

Below shows a breakdown of the Lead Changes for the Drydene 400. This gives you a different perspective on how the race unfolded

A couple of things that stand out is there were no passes for the lead on restarts-once the leader took the green, they were gone. Also, with the way the cautions fell for the race it created no long green flag runs that necessitated Green Flag Pit Stops. As a result, we didn’t see any pit stops (or lead changes) for those strategy calls.

The one thing that is clear – Team Hendrick had the field covered on the track and on pit road. This is what total team domination looks like.

What about Brad Keselowski?

Brad had little impact on the Dover race. He started 15th, climbed as high as 8th, earned 3 Stage Points before being involved in a Lap 315 incident that allowed him to finish 16th. He led no laps and his average position for the race was just outside the Top 10.

Not exactly a Brad K kind of race.

So why mention him in the title?

Monday morning brought the usual post-race discussions. With it came a steady stream of explanations of how what we saw Sunday, besides being historic was a pretty good race. It continued until mid-Tuesday morning when Jim Utter, Editor for broke the news that Brad K may become the next owner/driver, leaving Penske to become part owner in Roush-Fenway Racing.

And just like that, Brad K roared to the front to dominate discussions and mercifully relegated Dover to the back burner to quietly slide into the history books.

Good or bad, competitive race or not, it hardly matters now.

It’s Brad K… and on to COTA.

Thunder on… and Stay Safe

David Nance

Photo Credit; James Gilbert/Getty Images


  1. David, you have such a way of explaining what we saw or didn’t see. Sometimes, I never think about where they pit and how it effects the passing. It is always explained just as passes on pit road. Thank you for these kind of articles.
    Look forward to the next one.

    1. Vivian, thanks for your comments. Just trying to look a little deeper. I’ve struggled with the stats and they never made sense (to me) until I started plotting them out on the Summary. Still didn’t make sense until I looked at who was pitting where. After that it all came together. Hope it does for others. It’s fun. Hope others enjoy. Thanks again.

  2. Wow! This was an awesome breakdown of the race.
    I will have to make this a regular stop after every race.
    While numbers can’t prove a race is good or bad, they do cut through the BS that is slung by PR types. Personally I thought the race was a little below average for what you should expect at Dover. I’d also point out that while HMS was definitely dominant, aero decided who ultimately won. He who has the clean air can’t be passed.

    Can anyone get Loop Data? If so where?
    I did a quick Google search for loop data and found this
    but that doesn’t seem to have information about passes that you have above (at least not that I could find).

    Anyway, awesome job!

    1. Thanks Bill for coming here and commenting! I’m not sure where David gather the loop data from but the site I always look to regarding Statics are and if you look at a Cup race result you’ll find loop data there as well!
      Stay Safe

      1. Thanks Berra! That’s a great source. Can’t do without RR when it comes to results and stats. Thanks again and stay safe!

    2. Thanks for your comments Bill B! Much appreciated.

      I haven’t found a singular source for loop data.

      I use the Racing Reference site that Berra referenced for Green Flag Passes and Quality Passes. has about a dozen different reports including Closers. It’s interesting to see how the running order changed in the last 10% of the race. They also report the total GF Lead Changes for the Lead which I use in my numbers.

      Jayskis provides the pit stall selections as well as the Cumulative Report. These two are the foundations for the Summary along with the Timeline on the page. You have to check the race results then navigate to the TIMELINE.

      Put it all together and you got it.

      It’s a shame there is no single location but to date I’ve not found it. But every race is a different puzzle, just have to find the pieces and put them together.

      If you want to have some real fun when you watch the race, note the lead changes you get to shown. Then compare that to the Summary. Gives you at least a feel for how much up front you are being shown. You might be surprised.

      Sorry to get carried away. Didn’t mean to right another article LOL.

      Glad you enjoyed and thanks for taking time to comment. Much appreciated.

      Have a great race weekend!

  3. Had to add a quick comment here. Bill, if you’ve somehow missed David for all this time, by all means, get him on your “regular” list now! I never, ever compare my writers one to another, but I promise you, David is near the top of that list. Unlike me, he’s just very quiet about it and sometimes might go unnoticed. That should never happen!!!

    1. Oh I was aware of him from your RFF website but I don’t remember ever seeing him or anyone breakdown a race in such detail with respect to passing. Maybe he used to do it at RFF and I just missed it. I will be sure to check in after ever race from now on.

      1. Bill B

        I started doing these at the tail end of last season at RFF. They were pretty dry as I was trying to get my bearings. Have missed some races due to repercussions from the COVD vaccine but hope to continue through the remainder of the season. Tune in next week to see what COTA have us. Should be interesting!

    2. Thanks for the kind words PattyKay. Means more than you know. RFF was a tremendous experience and you and your team brought me so very far. Thank you! I’m greatly humbled.

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