The Indians have had a successful offseason, as noted by Craig Edwards last week and they kept winning the offseason on Thursday, agreeing with left-handed reliever Boone Logan on a one-year deal with an option, as first reported by Ken Rosenthal.

Entering Thursday, Cleveland had only one lefty in its bullpen, albeit perhaps the game’s best left-handed reliever in Andrew Miller. Now they have two who can miss bats, and presumably Logan can fit a matchup role that will free Miller to be used in a more versatile manner by Cleveland manager Terry Francona.

Last season with the Rockies, Logan held left-handed hitters to a .139/.222/225 slash line and since 2014 he’s limited lefties to a .236/.330/.392 slash line.

Francona said earlier this winter he didn’t just want any lefty added to the bullpen, he wanted an effective one. And according to T.J. Zuppe, Logan was on the Indians’ radar last trade deadline.

Logan didn’t make the cut of FanGraphs’ top-50 free agents this offseason, but he did come in at No. 50 on at CBSSports and ranked 37th according to MLB Trade Rumors. So for Cleveland to sign Logan in February to a one-year deal with an option seems like a winning transaction for a club, which is projected to win the AL Central and return to the postseason.

Logan produced slightly superior strikeout and swinging-strike rates this past season — and a better FIP — relative to Brett Cecil, who signed a four-year deal with St. Louis earlier this offseason. Logan seems like a relative bargain in terms of years.

Logan has posted strikeout percentages of 30%, 26% and 27% the last three seasons. He’s produced swinging-strike rates of at least 15% every year since 2014, reaching a career-best 16.4% last season, thanks to a slider-heavy approach. Logan threw his slider 52.3% of the time last season, while his fastball, which averaged 93 mph, was thrown 46.7% of the time.

Among relievers who threw at last 40 innings, Logan’s slider usage ranked fourth last season. His new teammate, Miller, ranked first (60.5%). Cleveland now owns considerable late-inning, left-handed, bat-missing power. That could come handy in the late innings in October.

The addition provides for Francona, who was as creative as any manager in recent memory with bullpen usage last postseason, even more weapons at his disposal should Cleveland again reach the postseason.

The Cleveland bullpen was already a strength with Miller, Cody Allen and company ranking fifth in bullpen FIP last season and seventh in fWAR. Today, it’s become stronger, giving the defending AL champions a little better odds of returning to October and succeeding there.