In a strategic move, Diamondbacks manager Torey Lovullo has decided to rest two regular players, Corbin Carroll and Nolan Arenado, during the series finale against the San Francisco Giants on May 20. Carroll, who was hit in the back of the head by a thrown ball in the previous game but reported feeling fine, is being rested as part of a broader strategy to manage player fatigue during a stretch of 13 consecutive games. He has been in excellent form, reaching base multiple times in eight straight games and batting .423 during this hitting streak. Meanwhile, Arenado is taking a scheduled day off to keep him fresh, boasting a .330 batting average over his last 32 games. The game features starting pitchers Merrill Kelly for the Diamondbacks, who is coming off a complete-game performance, and Tyler Mahle for the Giants, who has faced challenges this season. Kelly has a 3.24 ERA against the Giants in his career, while Mahle has struggled, allowing nine home runs in his last nine starts. The matchup also highlights Ketel Marte's impressive performance against Mahle, where he has achieved five hits in nine at-bats, including two doubles and a home run.