NEW YORK, NY – SEPTEMBER 23: GameDay host Kirk Herbstreit is seen during ESPN’s College GameDay show at Times Square on September 23, 2017 in New York City. (Photo by Mike Stobe/Getty Images)ESPN’s College GameDay has faced some criticism for its celebrity guest picker segment during the 2018 college football season, with the idea feeling stale to many, but the pregame show appears to have notched a huge name for tomorrow.Saturday’s show, set to take place at Ohio State before the Michigan game, will apparently have the biggest free agent in the MLB on the desk.Washington Nationals star Bryce Harper announced on Twitter that he’ll be the guest picker for Saturday.Harper’s wife, Kayla, played soccer at Ohio State and he’s often cheered for the Buckeyes.How Fir❌ Thy Friendship! Can’t wait for @CollegeGameDay to❌orrow! #Celebritypicker pic.twitter.com/pzjE0PKDnr— Bryce Harper (@Bharper3407) November 24, 2018Harper has been linked to several teams in free agency so far this winter, with the Nationals, Phillies, Yankees, Cubs, Dodgers and others all being rumored to have interest. Philadelphia is seen by many as the biggest threat to Washington.ESPN’s College GameDay, meanwhile, is set to air from 9 a.m. to 12 p.m. E.T.The final hour of the show will take place inside Ohio Stadium.