Nolan McLean made a strong major league debut by pitching 5 1/3 scoreless innings, leading the Mets to a 3-1 victory over the Mariners, their third win in 17 games, with key contributions from Francisco Lindor, Pete Alonso, and Edwin Díaz.
Infielder Casey Schmitt made his MLB debut for the San Francisco Giants, embodying the team's organizational philosophy of building for the future. Schmitt hit his first career home run in his first game, and the Giants won 4-1 behind a strong pitching performance from Logan Webb. The debut felt like the start of a new era for the Giants, who have been building their team under president of baseball operations Farhan Zaidi's leadership.
Joey Wiemer, the No. 3-ranked prospect by MLB Pipeline, made his Major League debut for the Milwaukee Brewers in their 3-1 win over the Cubs. Wiemer was not expected to compete for the Opening Day roster, but injuries and participation in the World Baseball Classic created an opportunity for him to impress during Spring Training. Although he was ultimately assigned to Triple-A Nashville, he never played a game there as he was called up to replace an injured player. Wiemer's unique style and work ethic have impressed his teammates and family, who have been expecting him to make it to the Majors since he was a child.