Gasser took a no-decision against the Twins on Saturday, allowing three runs on seven hits and two walks in 4.2 innings. He struck out three.
Megill secured the save against the Twins on Saturday, throwing a clean ninth inning.
Ortiz is getting an MRI on his neck after being removed early from Saturday's game against Minnesota, Todd Rosiak of the Milwaukee Journal Sentinelreports.
Stock (0-2) took the loss against the Pirates on Saturday, allowing eight runs on nine hits and five walks while striking out four across three innings.
Ortiz left Saturday's game against Minnesota early due to neck tightness, Hunter Baumgardt of Fox Sports 920 Milwaukee reports.
Hamilton isn't in the lineup for Saturday's game against the Twins.
Benge (wrist) isn't in the lineup for Saturday's game against the Pirates.
The Brewers selected Richardson's contract from Triple-A Nashville on Saturday.
The Mets optioned Wagaman to Triple-A Syracuse on Saturday.
Semien went 1-for-4 with a three-run home run in Friday's win over the Pirates.
