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 the Chicago Street Course. 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.

Anthony Alfredo ties the late, great, 7X Cup Champion Dale Earnhardt by making his 136th career Xfinity start this weekend. Image credit: @youngsmtrsports X Page
Xfinity Series Starts
Brennan Poole: 175th start! Ranks 90th
Anthony Alfredo: 136th start ties Dale Earnhardt, ranks 120th
Sheldon Creed: 121st start ties Dave Blaney, ranks 143rd
Josh Bilicki: 118th start ties Brett Moffitt, ranks 147th
Kyle Sieg: 99th start ties Tyler Reddick, ranks 174th
Blaine Perkins, Harrison Burton & Sammy Smith: 93rd start ties Jimmie Johnson, ranks 185th
Parker Retzlaff: 92nd start ties Sam Ard, ranks 193rd
Daniel Dye & Preston Pardus: 30th start ties Boris Said & Kurt Busch, ranks 358th
Dean Thompson: 20th start ties Donnie Allison, ranks 433rd

This weekend, by making his 427th career Cup start, Austin Dillon ties Lee Petty for 66th on the all-time starts list. Photo by David Buono — Icon Sportswire via Getty Images
Cup Series Starts
Kyle Busch: 733rd start ties Ryan Newman, ranks 15th
Ricky Stenhouse Jr.: 455th start ties Jimmy Means, ranks 59th
Austin Dillon: 427th start ties Lee Petty, ranks 66th
Alex Bowman: 344th start ties Kenny Wallace, ranks 86th
Erik Jones: 308th start ties Bobby Isaac, ranks 100th
William Byron: 271st start ties Travis Kvapil, ranks 114th
Ross Chastain: 242nd start ties Donnie Allison, ranks 124th
Ryan Preece: 143rd start ties Fireball Roberts, ranks 143rd
Cody Ware: 125th start! Ranks 206th
Josh Berry: 67th start ties Brendan Gaughan, ranks 285th