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 Phoenix 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 Austin Hill makes milestone start number 150 in the O’Reilly Auto Parts Series. Photo by Adam Davis — Icon Sportswire via Getty Images

O’Reilly Auto Parts Series Starts

Ryan Sieg: 404th start ties David Green, ranks 10th

Austin Hill: 150th start! Ranks 113th

Josh Bilicki: 131st start ties A.J. Allmendinger, ranks 132nd

Kyle Sieg: 118th start ties Brett Moffitt, ranks 149th

Parker Retzlaff: 111th start ties John Hunter Nemechek, ranks 164th

Chandler Smith & Jesse Love: 70th start ties Ryan Blaney, ranks 232nd

Taylor Gray: 50th start! Ranks 287th

William Byron: 44th start ties Bill Elliott, ranks 304th

Austin Green: 25th start! Ranks 401st

Mason Maggio: 23rd start ties Juan Pablo Montoya, ranks 414th

Blake Lothian: 1st start!

This weekend Ty Dillon makes his 285th career Cup start which tied his grandfather, Richard Childress, for 110th most all-time. Photo by Malcolm Hope — Icon Sportswire via Getty Images

Cup Series Starts

Denny Hamlin: 725th start! Ranks 18th

Michael McDowell: 541st start ties Clint Bowyer, ranks 41st

Chase Elliott: 362nd start ties Neil Bonnett, ranks 83rd

Ty Dillon: 285th start ties Richard Childress, ranks 110th

Ryan Preece: 227th start ties Marcos Ambrose, ranks 134th

Chase Briscoe: 184th start ties Curtis Turner, ranks 163rd