MLB Props Picks, Predictions: Zack Greinke, Marcus Semien Among Thursday’s Top Value Plays (April 21)by ActionNetworkApril 21, 2022April 22, 2022The Action Network’s Tanner McGrath gives out his favorite MLB player prop bets from the slate on Thusday, April 21. Leave a Reply Cancel replyYou must be logged in to post a comment.