Diaz fired a scoreless 10th inning, allowing one hit and striking out two while earning his 46th save in the 4-3 win over Houston on Sunday.
Diaz has earned a save in each of the last four days and extended his league-leading save total Sunday. He dropped his ERA to 1.98 and has 100 strikeouts in just 59 innings. Diaz will likely be unavailable for at least Monday's contest against Oakland.