|MLB Career Stats||14||18||4.07||315||0||93||322.2||396||1.39|
|1998||9||19th in NL|
|1999||32||8th in NL|
|2000||17||13th in NL|
|2003||29||7th in NL|
|2004||4||23rd in NL|
Made 4 appearances between early-season D.L. stints, getting charged with a blown save on April 29 in Chicago, allowing a game-tying homer in the ninth inning, but winding up with the 7-4 victory when the D-Backs scored 3 times in the 10th.
Finally recorded his first save of the year on May 25 vs. Pittsburgh, despite allowing a run on a walk and hit.
Was 1-1 with 2 saves in 4 chances after 19 outings, allowing 18 earned runs in just 16.2 innings for a 9.72 ERA, before turning season around as the calendar went from June to July...beginning with a scoreless inning of relief at home against Cincinnati on July 2, Matt finished the year allowing just 5 earned runs in his last 28.2 innings for a 1.57 ERA in that span...finished the year by saving 15 of his last 16 opportunities, including 12 straight conversions from July 6-September 12.
Tied Byung-Hyun Kim's record for consecutive strikeouts by fanning 8 straight batters over 3 appearances from July 27 to August 3.
Recorded saves on back-to-back days for the first time on August 13 at Pittsburgh and August 14 at Philadelphia.
Finished the year by recording saves in 6 of his last 7 appearances, including 3 consecutive rescues to end the season.
Retired the first batter he faced in 16 of his last 19 appearances after nabbing the initial hitter in just 16 of his first 29 outings.1999 One of the keys to Arizona's second half success actually took place just a couple of days prior to the All-Star break when the D'Backs acquired Matt from the Marlins, arriving in Bank One Ballpark on July 10 and immediately solidifying the bullpen. Ironically, the trade was consummated on July 9, the same night that 15,000 pins were being distributed in Pro Player Stadium in honor of Mantei, but while fans were receiving his likeness on a pin, the Diamondbacks got the real thing. The possessor of 10 saves during the first 3+ months of the year with Florida, Matt rescued 22 games in 25 tries for the Diamondbacks, dominating the opposition with 49 strikeouts in 29.0 innings after the trade, a 15.2 strikeout per 9-inning ratio. All told for the year, Matt fanned 99 men in 65.1 frames, a 13.6 ratio. Dubbed the Iceman during his stay in south Florida, Mantei recorded a save in his first appearance as a D'Back on July 11, working a scoreless ninth at home vs. Oakland in the finale prior to the All-Star break. Things didn't go quite as well in his second appearance, entering in the ninth of a 2-0 game vs. the Rangers on July 15 in Arlington, attempting to close the door on a potential Randy Johnson victory. After retiring the first 2 men, he surrendered what appeared to be a harmless walk, but 2 walks later the bases were loaded, then Mark McLemore's double unloaded them for a 3-2 Texas win. It was 1 of only 3 blown saves charged to Mantei, unfortunately each of them came in potential Big Unit wins. After the loss in Arlington, Matt recorded saves in his next 7 trips to the hill, his second best streak of the year. Following his second blown save on August 11 and an inning of work against Milwaukee 3 days later, the Iceman went on another roll, recording saves in 9 consecutive appearances in which he was virtually untouchable, allowing only 2 hits in 9.0 innings with 19 of the 27 outs coming via the strikeout. In fact, dating back to the inning of work in a non-save situation vs. the Brewers on August 14 through a save on Sept. 14 at home over the Pirates, Mantei tossed 12.0 consecutive shutout innings, allowing only 7 hits while recording 25 K's. The scoreless streak was snapped at home on Sept. 18, when he faced his former mates again trying to finish up for Johnson, but a Mike Lowell 3-run homer capped a 4-run inning for the Fish. Fortunately, the D'Backs tied the game in the ninth, then won it on Luis Gonzalez's 2-run homer in the 10th. Matt wrapped up the year with 4 scoreless relief appearances, earning 3 saves. His 21 saves after the All-Star break tied John Rocker for the third most in the majors, trailing Mariano Rivera and Ugueth Urbina, who each had 22. Mantei recorded at least 1 strikeout in 28 of his 30 appearances with Arizona, including a streak of 19 consecutive outings from August 8-Sept. 28, totaling 34 K's in 17.1 innings. All told, he was 32-for-37 in save situations during the '99 season, rescuing 10 of 12 while a member for the Marlins. During his stint with the D'Backs, Matt held opposing lefthanded hitters to a .140 average, surrendering just 7 hits in 50 at bats. Overall, opposing hitters finished with a composite .189 average against the Iceman, collecting 44 hits in 233 at bats. While with Florida, Matt had a 5-strikeout performance on May 3 against Milwaukee. 1998 Started the year with Charlotte (AAA), making 16 appearances before May 20 recall to the Marlins, appearing that night with an inning against the Diamondbacks. Gave up only 1 earned run in first 11 outings after recall, spanning 14.0 innings (0.64 ERA). Led the Marlins with 9 saves, earning club Rolaids Relief Man Award. Earned first win on June 12 vs. the Mets. Was disabled from August 19-September 4 with a right ankle sprain. 1997 Opened the year on the D.L. following off-season rotator cuff surgery. Was transferred to the 60-day list on May 16. Appeared in 9 minor league games as part of rehab work. 1996 Made the Marlins opening day roster and fanned 24 in his first 16.0 innings of year. Earned first big league win on May 19 at Chicago, tossing a scoreless 10th inning. Was optioned to AAA just 8 days later, then was recalled on June 21, but placed on the D.L. with a sore right shoulder. 1995 Was on the D.L. at the outset due to off-season back strain. Activated on June 18 and made major league debut that day in Philly, working an inning with a walk. Suffered first big league loss on July 6 at St. Louis. 1994 Spent entire season with Appleton in the Mariners chain, leading the club with 26 saves and 2.06 ERA. Left unprotected by Seattle, he was acquired by Florida in the Rule 5 draft on December 5. 1993 Led the Northwest League with 12 saves for Bellingham. Earned the save on August 16 by striking out the side in the ninth inning of a 1-0 win over Spokane in Bellingham's annual game in the Kingdome. Was named the righthanded relief pitcher on the league's All-Star team and earned Rolaids Relief Man-of-the-Year honors for the league. Also named the ninth major league prospect by Baseball America.