Big Unit's big number: Randy Johnson wins 300th

JOSEPH WHITE | 6/5/2009, 11:42 a.m.

Johnson had to leave the game because of what he called a "senior moment" - his decision to go after a comebacker that he knocked down in the sixth inning. The 6-foot-10 Johnson barehanded the ball while falling forward to throw out the runner and bruised his pitching shoulder on the play. He's expected to make his next start.

San Francisco led 2-1 when Johnson departed, but he nearly wound up with a no-decision. The Nationals loaded the bases with two outs in the eighth before Adam Dunn was called out on strikes with a full count on a knee-high fastball from reliever Brian Wilson.

The 45-year-old Johnson is the sixth left-hander to win 300 games and the second-oldest pitcher to reach the milestone. Knuckleballer Phil Niekro was 46 when he won his 300th with the New York Yankees in 1985.

As long as it took to get to 300, the final step required patience. Two off days in the Giants' schedule and a rainout Wednesday night gave him seven days of rest after winning No. 299 last week against Atlanta. In addition, the opener Thursday was delayed 36 minutes by bad weather and was played in a light rain.

Once he finally got on the mound, Johnson had an efficient outing, not flashy. He didn't allow a baserunner until a walk in the fourth inning and didn't give up a hit until Elijah Dukes' broken-bat single up the middle in the fifth.

Johnson then walked Austin Kearns, putting runners on first and second with none out. But second baseman Emmanuel Burriss thwarted a rally with the defensive play of the game. On a one-hopper that hit the mound, Burriss dived to his right to stab the ball backhanded, then flipped it out of his glove to shortstop Edgar Renteria to start a dazzling double play.

The unearned run came on Nick Johnson's double in the sixth, following a throwing error by Renteria.

Juan Uribe's RBI grounder and Burriss' RBI single off Jordan Zimmermann (2-3) gave the Giants a 2-0 lead in the second. San Francisco added three runs in the ninth.

After Johnson was pulled, relievers Brandon Medders, Jeremy Affeldt and Wilson took care of the rest, although Wilson's strikeout of Dunn was a borderline call disputed by the Nationals slugger. Wilson also worked the ninth for his 13th save.

Johnson joined Steve Carlton as the only pitchers to win No. 300 against the organization with whom they made their major league debut.

Johnson's first three wins - exactly 1 percent of his total - came with the Montreal Expos, long before the franchise moved to Washington. His first victory was Sept. 15, 1988, five days after his 25th birthday, but most people noticed him only because he was the tallest player in the majors.

"We watched history today," Nationals manager Manny Acta said. "He's probably going to be the last guy to ever do this. It was impressive to see. His longevity and everything he's done for the game paid off today."

In the second game, Matt Cain (7-1) won his fifth straight decision. San Francisco broke a 1-all tie in the fifth with a five-hit rally against Ross Detwiler (0-2), including a run-scoring double by Pedro Sandoval and RBI singles by Aaron Rowand and Rich Aurilia.

"To get the 300th win for R.J. is huge," Cain said. "It was my intention to keep the momentum going for us."

Notes: Johnson is the fourth pitcher to win his 300th with the Giants, joining Christy Mathewson in 1912 and Tim Keefe and Mickey Welch, both in 1890. ... Washington OF Josh Willingham remained sidelined with a stomach virus. ... The Nationals have lost eight of nine and 20 of 24.

AP freelance writer Rich Dubroff contributed to this report.