Below are some potential notable starts being made by drivers this weekend. Notable meaning they will be tied with a driver in number of starts made in that specific series, or the number of starts being made is a significant number that they are reaching in their specific race this weekend at Sonoma Raceway. Rankings reflect the all-time starts list for that series.
(The image above each series is the driver I find having the most notable start this weekend)

*This will be updated after qualifying for each race if a driver does not make the race.

This weekend at Sonoma Corey Day ties former Cup Champion, Kurt Busch, and Road Course specialist, Boris Said, by making his 30th career O’Reilly Series start. Photo by James Gilbert — Getty Images

O’Reilly Auto Parts Series Starts

Austin Hill: 165th start ties Trevor Bayne & Ty Dillon, ranks 100th

Kyle Sieg: 133rd start ties Austin Cindric, ranks 129th

Blaine Perkins, Harrison Burton & Sammy Smith: 127th start ties Matt DiBenedetto, ranks 141st

Taylor Gray: 65th start ties Ryan Newman, ranks 244th

Carson Kvapil: 61st start ties Danica Patrick, ranks 255th

Dean Thompson: 54th start ties Robby Gordon, ranks 273rd

Corey Day: 30th start ties Boris Said & Kurt Busch, ranks 369th

Brad Perez & Patrick Starapoli: 23rd start ties Juan Pablo Montoya, ranks 416th

This weekend A.J. Allmendinger will be making milestone Cup start number 500 at Sonoma. Image credit: @KauligRacing X Page

Cup Series Starts

A.J. Allmendinger: 500th start! Ranks 48th

Ryan Blaney: 396th start ties Robby Gordon, ranks 74th

Alex Bowman: 375th start! Ties Ward Burton, ranks 79th

Ryan Preece: 241st start ties Todd Bodine, ranks 126th

Cody Ware: 160th start ties Cotton Owens & Ron Bouchard, ranks 183rd

Riley Herbst: 62nd start ties Glen Wood, ranks 295th