May 18:
Zimmermann allowed two runs, one earned, over eight innings and was the losing pitcher Saturday against the Padres.

May 13:
Zimmerman struck out five batters and gave up two runs over 7.2 innings in Monday's 6-2 win over the Dodgers.

May 08:
Zimmerman allowed just one earned run on seven hits over seven innings in Wednesday's 3-1 win over Detroit. He struck out eight.

May 07:
Zimmermann's scheduled Tuesday start will be pushed back to Wednesday due to the postponement of Tuesday's game.

May 01:
Zimmerman dominated the Braves over eight innings on Wednesday night. He struck out eight, and walked none in the 2-0 Washington win.

Apr 26:
Zimmermann was dazzling against the Reds Friday night, tossing a complete game one-hit shutout in a 1-0 Washington win. He walked one and struck out four.

Apr 22:
Zimmermann needed 96 pitches to get through five innings Sunday, allowing two runs on two hits and three walks while striking out four.

Apr 15:
Zimmermann stayed perfect on the year, earning his third win in three starts by holding the Marlins to three runs over nine innings of work.

Apr 10:
Zimmermann gave up two runs on seven hits over seven innings while striking out four in his second win of the season.

Apr 04:
Zimmermann allowed just one run over six innings Thursday to earn the win against Miami. He scattered eight hits and issued a pair of walks with one strikeout.

Mar 20:
Zimmermann credited Monday's outstanding performance to increased use of his new changeup, the Washington Post reports. "I had all four pitches working," the right-hander said. "I threw a lot of good change-ups that were falling below the zone."

Mar 19:
After allowing a leadoff single Monday, Zimmermann proceeded to throw six perfect innings against a Tigers lineup that featured most of their Opening Day starters.

Mar 14:
Zimmermann bounced back from a "dead arm" period to throw 82 pitches in Wednesday's Grapefruit League start.

Mar 09:
Nationals manager Davey Johnson says Zimmermann's "dead arm" is normal for this time of the spring, the Washington Post reports. "It's about this time of spring," Davey Johnson said. "All my pitchers go through a little dead arm... [Zimmermann] got some treatment afterward. Nothing anything to worry about. Probably a little fatigue in there. But I see that third time out, sometimes fourth time out, get that with everybody."

Mar 08:
Zimmermann is experiencing dead arm, William Ladson of MLB.com reports.

Mar 02:
Zimmermann, who's been playing around with a changeup for a few seasons, is finally starting to develop a feel for the pitch, the Washington Post reports. "It feels really, really good right now," Zimmermann said after Friday's Grapefruit League outing. "I wanted to throw it about every pitch if I could, but I know that wasn't the right thing to do. It's definitely learning when to throw it, the right times. That's the next step."

Feb 15:
Zimmerman and the Nationals avoided arbitration by agreeing to a one-year, $5.35 million contract Friday, William Ladson of MLB.com reports.

Oct 12:
Zimmermann would start Game 1 of the NLCS if the Nationals are able to beat the Cardinals on Friday, the Washington Times reports.

Oct 08:
Zimmermann gave up five runs on seven hits in three innings while taking the loss in Game 2 of the NLDS on Monday afternoon.

Oct 06:
Zimmermann, who will start Game 2 of the NLDS for the Nationals, finished the regular season with a 12-8 record, 2.94 ERA, 1.17 WHIP and 153:43 K:BB ratio in 195.2 innings.

Sep 24:
Zimmerman earned a victory Monday against the Brewers as he pitched 6.2 innings and allowed one run, four hits and two walks to go along with seven strikeouts.

Sep 19:
Zimmerman pitched 6 innings of one run baseball as the Nationals beat the Dodgers 3-1 Wednesday.

Sep 11:
Zimmermann labored through five innings Tuesday against the Mets, allowing two runs on six hits and three walks while striking out six.

Sep 06:
Zimmermann tossed seven strong innings to earn the win Thursday, allowing two runs and five hits with nine strikeouts.

Sep 01:
Zimmermann allowed eight runs (all earned) over 3.2 innings and did not factor in the decision Saturday against the Cardinals.

Aug 27:
Zimmermann had another short outing Sunday, giving up three runs on five hits and three walks over five innings, striking out three.

Aug 20:
Zimmerman did not record a decision Monday against the Braves as he pitched five innings and allowed four runs, eight hits and two walks to go along with two strikeouts.

Aug 15:
Zimmermann allowed 10 baserunners (two walks) on Tuesday but only gave up two runs over 5.2 innings in the loss to the Giants.

Aug 09:
Zimmermann matched a career high with 11 strikeouts, and tossed six scoreless innings to earn the win at Houston on Thursday. He scattered three hits and did not issue a walk.

Aug 04:
Zimmermann (shoulder) allowed five runs (four earned) on seven hits in five innings against the Marlins on Saturday, but he did not factor into the decision.

Aug 01:
The Nationals will push Zimmermann's next start back a day due to minor inflammation in his right shoulder, the Washington Times reports.

Jul 28:
Zimmermann allowed one run over six innings and was the winning pitcher Saturday against the Brewers.

Jul 23:
Zimmerman was sharp Monday against the Mets as he pitched six innings and allowed one run and four hits to go along with six strikeouts.

Jul 18:
Zimmermann (7-6) cruised through six shutout innings Wednesday, allowing four hits and no walks while striking out four in a win over the Mets.

Jul 13:
Zimmermann tossed six shutout innings agsinst Miami on Friday night, allowing four hits and walking one while striking out six in a 5-1 Washington win.

Jul 08:
Zimmermann was excellent Sunday against the Rockies, allowing only one run on three hits and two walks in seven innings of work.

Jul 03:
Zimmermann allowed two runs (one earned) on seven hits over six-plus innings of a 9-3 win over San Francisco on Tuesday night. He did not walk a batter, and struck out seven.

Jun 28:
Zimmermann surrendered just one run on eight hits and three walks over seven innings as the Nationals stomped the Rockies on Wednesday. He upped his record to 4-6 in 2012.

Jun 22:
Zimmermann was a tough luck loser Friday night, allowing two runs on eight hits, walking one and striking out two over seven innings of a 2-1 loss to Baltimore.

Jun 16:
Zimmerman allowed three runs (two earned) on five hits and three walks over six innings on Saturday against the Yankees.

Jun 10:
Zimmermann pitched the Red Sox's Jon Lester to a draw Sunday, allowing three runs on seven hits and two walks across seven innings, as Washington eked past Boston.

Jun 05:
Zimmermann cruised through the first five innings Tuesday against the Mets, but gave up a pair of solo homers in the sixth. He left with the lead after six innings of five-hit ball with five strikeouts and no walks, but received no decision in the eventual extra-inning win.

May 28:
Zimmermann gave up four runs on eight hits over six innings against the Marlins on Monday in a losing effort.

May 22:
Zimmermann picked up a win with a solid start at Philadelphia, allowing just one run on seven hits over six innings.

May 17:
Zimmermann allowed four runs and seven hits in six innings against Pittsburgh on Thursday. He issued one walk and struck out six.

May 01:
Zimmermann allowed four runs (three earned) over 6.1 innings Tuesday against Arizona, allowing eight hits, walking one, and striking out six.

Apr 25:
Zimmermann (1-1) collected his first win of the year Wednesday with six innings of sparkling one-run ball against the Padres. He allowed four hits, didn't walk a batter and struck out six.

Apr 18:
Zimmermann was once again outstanding Wednesday allowing just one run on three hits, and striking out three over seven innings, en route to a no-decision against the Astros. Zimmermann remains winless on the season despite allowing just three earned runs over his first 21 innings pitched.

Apr 13:
Zimmermann was spectacular again Friday, allowing just one run on three hits, walking two and striking out three over seven innings.

Apr 09:
Zimmermann was superb in his 2012 debut against the Cubs, giving up two runs (one earned) on six hits and no walks while striking out four.

Mar 29:
Zimmermann had another strong spring outing Wednesday, striking out two without walking a batter over six shutout innings.

Mar 18:
Zimmermann struck out three without walking a batter in four scoreless innings of work Saturday.

Mar 08:
Zimmermann walked one and struck out three, all on sliders, in three shutout innings of work Wednesday.

Mar 01:
Zimmermann says he's a lot more comfortable with his change-up than he was last season, the Washington Post reports.

Jan 17:
Zimmerman agreed to a contract with Washington on Tuesday, avoiding arbitration, Nationals.com reports.

Jan 14:
Zimmermann has filed for arbitration.

Dec 15:
Zimmermann has been tendered a contract by the Nationals.

Aug 28:
Sunday's start will be Zimmermann's last of the season, MLB.com's William Ladson reports.

Aug 23:
Zimmermann held the Diamondbacks to two runs on five hits in 6.1 innings Tuesday, but he still wound up with his 11th loss of the year.

Aug 18:
Zimmermann tossed 5.2 scoreless innings Thursday to earn his 8th win of the season. He gave up six hits and a pair of walks with one strikeout.