What happened: The Arizona Diamondbacks activated outfielder Lourdes Gurriel Jr. from the 10-day injured list on Monday. Gurriel had been sidelined since May 22 with a left hamstring strain and was immediately named the designated hitter for the series opener against the Angels. To accommodate his return, the club optioned top outfield prospect Ryan Waldschmidt to Triple-A Reno.

Why it matters: Gurriel's return adds veteran stability to an Arizona offense that is currently three games behind the Dodgers in the NL West. The move to option Waldschmidt has sparked controversy among fans who questioned the decision to keep Pavin Smith on the roster. The front office is prioritizing established major-league experience as the team enters a critical mid-season stretch.

What to watch: Gurriel is expected to return to left field defensively later this week. The Diamondbacks continue their home series against the Los Angeles Angels on Tuesday.