The Mets designated Gerber for assignment Sunday.
New York previously optioned the right-handed reliever to Triple-A Syracuse back on July 5 after he had posted a 4.32 ERA, 1.20 WHIP and 8:4 K:BB in 8.1 innings over seven appearances across four stints in the majors on the season. Gerber will give up his spot on the 40-man roster to catcher Shawn Ross, who was claimed off waivers from the Pirates.