Edwin Diaz -- wearing his nickname, "Sugar," on the back of his jersey for Players' Weekend -- pitched a perfect ninth against the D-backs for his 49th save, breaking the Mariners' single-season record of 48 set by Fernando Rodney in 2014.
Diaz got the first two batters, Nick Ahmed and Alex Avila, on groundouts to first baseman Robinson Cano. He then struck out Daniel Descalso swinging to close out the 6-3 victory.
The 24-year-old right-hander is on pace for 56 saves, a total reached only twice previously: Bobby Thigpen saved 57 for the White Sox in 1990, and Francisco Rodriguez set the current MLB record with 62 for the Angels in 2008.