CARLSBAD, Calif. -- Craig Kimbrel's agent is pitching his free-agent client to teams as the best closer of all-time, according to Fancred's Jon Heyman.

Agent Dave Meter has a fairly straightforward pitch on client Craig Kimbrel. Points out Meter: He’s the best alltime, not just recently but alltime. Lowest ERA, lowest batting average against, lowest OPS against. Also points out he saved all his chances even this postseason. — Jon Heyman (@JonHeyman) November 6, 2018

Kimbrel, who won a World Series with the Red Sox in 2018, is the top free-agent closer available in free agency this winter. His agent, Dave Meter, is beginning to meet with teams at the GM meetings in Carlsbad in hopes of securing a long-term deal for his client.

While some statistics do show Kimbrel as one of the very best ever, many will argue he's not yet in the same class as guys like Dennis Eckersley, Mariano Rivera or Trevor Hoffman.

Kimbrel has saved 333 games over his nine-year major-league career and owns a 1.91 ERA in 532.2 innings. His last year in Boston was the worst of his career by some measures, as his 2.74 ERA represented the lowest of his career.

Meter is right in saying that Kimbrel converted all six of his save chances in October, though the righty had an up-and-down month and finished with a 5.91 ERA while walking eight in 10.2 innings. The Red Sox are interested in a reunion with Kimbrel, and other teams (like the Cardinals, Braves and Phillies, to name a few) are sure to make aggressive bids at signing him.