Two NBC Chicago personalities are vying for a chance to be named champion of the White Sox's "Broadcast Bullpen Challenge."
Kye Martin and Laurence Holmes are competing against each other and six other personalities from Chicago TV and radio to be named the champion.
The winner will be decided through online votes and social media mentions.
Holmes will face off against CBS Chicago meteorologist Megan Glaros with ceremonial first pitches at Saturday's Sox game against the New York Yankees.
Martin will face US 99.5 FM's Ramblin' Ray Stevens on Sunday.
The times available to vote for each personality differ. A schedule is posted on the White Sox website.