ST. LOUIS -- Koji Uehara is 38 years old, has never been an All-Star, throws only two pitches and can barely crack 90 mph. And for some reason, he's been unhittable in the World Series.

He's surprising even himself.

"Not only the postseason," Uehara said through a translator, "but the regular season, the season overall -- it's been a surprise for me."

Uehara locked down another save in Monday's 3-1 Game 5 win, throwing 1 1/3 perfect innings and striking out two to preserve a two-run lead. It was his seventh save this month, tying him with Brad Lidge (2008 Phillies), Robb Nen (2002 Giants), Troy Percival (2002 Angels) and John Wetteland (1996 Yankees) for the most in a single postseason.

Uehara's next save would mean a World Series championship.

"I was expecting a lot of close games," Uehara said when told of the record, "so that part was expected."

Uehara and the four others who share the mark have benefited from the additional postseason rounds since the Division Series era began in 1995, but he and his fastball-splitter combo have been unhittable. In 12 2/3 playoff innings, he's given up only one run -- Jose Lobaton's walk-off homer in Game 3 of the American League Division Series -- on seven hits, striking out 15 and walking none.

Koji comes up clutch
Most saves in one postseason
Rank Player Team Year Saves
1. (tie) Koji Uehara Red Sox 2013 7
1. (tie) Brad Lidge Phillies 2008 7
1. (tie) Robb Nen Giants 2002 7
1. (tie) Troy Percival Angels 2002 7
1. (tie) John Wetteland Yankees 1996 7
6. (tie) Neftali Feliz Rangers 2011 6
6. (tie) Brian Wilson Giants 2010 6
6. (tie) Mariano Rivera Yankees 2000 6
6. (tie) Mariano Rivera Yankees 1999 6
6. (tie) Mariano Rivera Yankees 1998 6
6. (tie) Rich Gossage Yankees 1981 6
12. (tie) Jason Motte Cardinals 2011 5
12. (tie) Mariano Rivera Yankees 2009 5
12. (tie) Manny Corpas Rockies 2007 5
12. (tie) Mariano Rivera Yankees 2003 5
12. (tie) Mariano Rivera Yankees 2001 5
12. (tie) Mark Wohlers Braves 1996 5
12. (tie) Mark Wohlers Braves 1995 5
12. (tie) Tom Henke Blue Jays 1992 5
12. (tie) Rick Aguilera Twins 1991 5

Those numbers, which led to MVP honors in the AL Championship Series, come after a season in which Uehara posted a 1.09 ERA, a 0.57 WHIP and an 11.22 strikeout-to-walk ratio.

"Experience has paid a lot of dividends for me," Uehara said.

Monday saw Uehara record his fourth save of at least four outs in these playoffs. With two outs and David Freese on second in the eighth, Uehara replaced Jon Lester and struck out dangerous pinch-hitter Matt Adams. Facing the top of the Cardinals' order in the ninth, he struck out Matt Carpenter looking, got pinch-hitter Jon Jay to ground out to first and induced a flyout to Matt Holliday, who'd homered five innings earlier.

"Every time he walks to the mound," manager John Farrell said, "it's one of the most calm innings that we'll watch, regardless of the stage, regardless of the importance of the game."

Afterward, Uehara was asked by a TV reporter if what he's doing is "magic," and he vehemently shook his head before even hearing the translation.

"I'm just a regular human being," Uehara said -- even though that's hardly been noticeable in October.