The Marlins secured Webb's services for 2013 on Friday by tendering the right-hander a contract. Both sides must still work out the details to avoid going through an arbitration hearing.
With just over three seasons of MLB service time, Webb is eligible for arbritation for the first time. The 26-year-old righty made the league minimum of $480,000 last year.
Webb joined the Marlins after the 2010 season, arriving in a trade with the Padres for outfielder Cameron Maybin.
A native of Clearwater, Fla., Webb appeared in 65 games last season for Miami, posting a 4-3 record and a 4.03 ERA. Shortly after the All-Star break in July, he was optioned to Triple-A New Orleans for nearly two weeks before he was recalled to Miami.
After the break, Webb posted a 1.78 ERA in 29 games. The sinkerballer struck out 44 and walked 20 in a career-high 60 1/3 innings.
Webb broke in with the Padres in 2009, and he has made 200 appearances and thrown 195 2/3 innings in his career.
The Marlins are in the market for experienced bullpen help. Steve Cishek will handle the closer's role. In the second half of last year, Heath Bell was being mainly used in the eighth inning, and now that Bell has been traded to the D-backs, Webb is one of the choices to serve as the new setup man.