Mayo went 2-for-5 with two home runs and three RBI in Monday's 6-3 win over Cleveland.
Walker recorded the final out to earn the save in Monday's win over Cleveland.
Rogers (10-9) notched the win against Cleveland on Monday, allowing one run on six hits and no walks in 7.1 innings. He struck out six.
Tong (2-1) earned the win against Miami on Monday, allowing four runs on four hits and one walk in five innings. He struck out seven.
Taveras is out of the lineup for Monday's game against the Guardians.
Cowser is out of the lineup for Monday's game against the Guardians.
Manager Craig Albernaz said Monday that Bautista's (shoulder) return from the 60-day injured list isn't imminent, Matt Weyrich of The Baltimore Sun reports.
Manager Craig Albernaz said Monday that O'Neill's shoulder isn't responding to rehab the way they'd hoped, and he's dealing with a "significant" injury, Jake Rill of MLB.com reports.
Manager Craig Albernaz said Monday that Helsley (elbow) will throw live batting practice Tuesday or Wednesday, Jake Rill of MLB.com reports.
Young is not in the lineup for Monday's game in Miami.
The Mets have won four of their last five games and gone over the total in eight of their last nine. Clay Holmes is on the mound and he's gone over three of his last four starts while losing three of his last four starts. Brandon Young has lost his last three starts, allowing three and four runs a game. There's a 78% chance of rain in Baltimore with temperatures at 85° and the wind blowing out at 6 miles an hour. Just the over.
