Matty Ott has apparently saved his last game for the LSU baseball team.

The school’s all-time saves leader has agreed to terms with the Boston Red Sox, which drafted him in the 13th round, according to LSU coach Paul Mainieri.

“I’m not sure if he’s signed yet, but I’m sure its inevitable,” Mainieri said Thursday.

A 6-foot-2, 195-pound right-hander from Chalmette, Ott set an LSU record with 33 saves in three seasons with the Tigers.

Ott’s freshman year was his best, as he became a surprisingly major factor in the Tigers’ drive to their sixth College World Series title in 2009.

Armed with a wicked slider, Ott went 4-2 with a 2.68 earned run average and 11 saves.

He found the going tougher as a sophomore and junior, however.

In 2010, Ott was 2-4 with 11 saves but a 6.38 ERA. This season, Ott had a 2.66 ERA — best of any Tiger who pitched more than one inning — but was 1-3 with only six saves.

Part of the season, he lost the closer’s role to Kevin Berry.

In his last outing, May 20 at Mississippi State, Ott couldn’t hold a one-run lead in the ninth. He gave up two runs in a 6-5 loss that kept LSU out of the Southeastern Conference tournament and possibly the NCAA tournament as well.

“Matty has done some tremenous things for our program,” Mainieri said. “I know he’s had a few rough times the last couple of years, but I’ll always choose to think of the positive moments with Matty.”

Ott joins former LSU starter Anthony Ranaudo in the Red Sox organization. Ranaudo, who got his first win with Class A advanced Salem, Va., Wednesday, is 5-2 with a 3.26 ERA in 12 minor league starts.

“I hope Anthony will start Game 7 of the World Series for the Red Sox one day, and Matty will close it out,” Mainieri said.

Maineri said he didn’t know of any developments with any other drafted LSU players or signees, though he said he expects pitcher Tyler Jones (11th round, Minnesota) to sign soon.

Jones will replace LSU pitcher Kevin Gausman with Harwich of the Cape Cod League after Gausman’s next start. Gausman will join the USA Baseball Collegiate team.

“Hopefully, for Tyler’s sake the Twins will get a chance to see him pitch and feel he’s worth a bigger signing bonus,” Mainieri said.

The LSU coach expects junior center fielder Mikie Mahtook (first, Tampa Bay) to sign. He also said if LSU keeps any of its top-three drafted signees — shortstop Trevor Story (first, Colorado), shortstop John Eierman (fourth, Tampa Bay) or center fielder Jake Cave (sixth, New York Yankees) — “it will be lagniappe.”

Mainieri said Catholic High’s Aaron Nola or fellow signee Nick Goody could vie to be LSU’s closer in 2012 if neither goes pro. Both were drafted in the 22nd round: Nola by Toronto, Goody by the Yankees.

Mainieri said he continues to have commitments from just two players — infielders Tyler Hanover and Raph Rhymes — that they will return in 2012. Both were drafted in the 40th round: Hanover by the Yankees, Rhymes by Pittsburgh.

PIRATES SIGN ULL’S FUSELIER: Louisiana-Lafayette outfielder Alex Fuselier signed Thursday with Pittsburgh, which drafted him in the 21st round.

This season as a leadoff hitter, he went .308 with four homers, 21 RBIs and a team-high 14 stolen bases.