Garrett Mock couldn’t hold the Phillies — giving up five runs in the first two innings — and Phillies ace Cliff Lee pitched a shutout as Philadelphia blanked the Nats 5-0 in Philadelphia on Tuesday night. Mock appeared to lose some of his shakiness over the next four innings, pitching six innings in all while giving up seven hits. But the story of the night was Lee, who was masterful: six hits over nine innings with nine strikeouts. Lee threw 124 pitches, 84 of them for strikes. Philadelphia’s scoring included a litter of doubles: given up to Rollins, Ibanez and Ruiz. Phuzzie right fielder Jason Werth once again proved to be a Nats’ killer, honing in on Nats’ pitching with a 3 for 4 night.

Down On Half Street: Josh Willingham continues to struggle at the plate. His last solid game was on August 25, when he went 4 for 4 against the Cubs in Chicago. Willingham is 6 for September: well below the Mendoza line. Willingham’s OBP is still at .389, but that’s thirty points below the .420 peak he reached in mid-August . . . Ryan Zimmerman has also cooled off, hitting just .200 in his last ten games. Maybe it’s the long season: with under twenty games remaining and the pressures of playing on the road, it’s going to be difficult for the Nats to come up with enough runs to beat the likes of Cliff Lee . . . with all the troubles Nats’ pitching has had this year, fans may be taking the hitting for granted. But Willingham and Zimmerman are not the only ones suffering through an insufferable September. Cristian Guzman (who has been up and down all year) is 7 for 35 in September — an autumnal .200 . . .  

The mini-slump in the middle of the Nats’ order seems to have had no impact on Adam Dunn, who is batting a nifty .333 over the last ten games (13 for 39). Dunn continues to hit the long ball — he hit his 37th in Florida and is line to hit his 40th before this thing is over. Dunn might well be the Nats biggest surprise this season, with a .282 batting average and an OBP of .410. Those numbers are not only pretty good, they’re better than Ryan Howard’s numbers in Philadelphia. Who would have guessed that? Howard has hit one more homer than Dunn, but his batting average stands at .272 and his OBP is .350 — well below Dunn’s marks. Dunn hasn’t nearly equalled the best of Howard’s best years (Howard was the NL MVP in 2006, with 58 homers and and 149 RBIs), but Howard’s numbers have fallen off this year. Then too, you can whine all you want about Dunn’s strike outs, but Howard is worse: Dunn has 162 strike outs to Howard’s 168. Dunn has actually cut down on his strike outs, while Howard is about the same. Dunn also has the better eye: he has walked 104 times to Howard’s 65. So who’s the better hitter: Dunn or Howard?

Howard is on the front end of a three year contract that is paying him $54 million. He will make $15 million this year, $19 million next year and $20 million in 2011. Dunn is in his first year of a two year contract that will pay him $8 million this year and $12 next year. Dunn is hitting better than Howard, and at half the price. Compared to Howard, Dunn is a bargain. In fact, Dunn is a bargain when compared to a lot of the league’s first basemen. Chicago’s Derrick Lee has a better average than Dunn and fewer strike outs (100 in 127 games), but he also has fewer homers — though not by much: 37 for Dunn, 33 for Lee. And Lee is four years older. Lee has the better glove, of course (and it’s much better) — but it’s not a stretch to say that Dunn is a comparable hitter to the Cubbie’s first baseman and, in some areas, his numbers are actually better. Lee is getting $13 million this year in the fourth year of a five year deal that pays him the same amount every year. That’s $5 million more than Dunn. Want some more?

If you compare Dunn’s numbers with Chokes first baseman Carlos Delgado (a hell of a hitter in his prime) over the last three years, Dunn is better. And after 17 seasons, Delgado is starting the break down: he’s played all of 26 games this year and he’s 37 years old — all for about $12 million (four million more than Dunn). There’s no guarantee, of course, that Dunn will hit the ball next year like he did this year. But he’s only 29 with (arguably) his best years yet to come. So here’s what this means: it’s time for the Nats to start thinking about giving Dunn a contract extension that, even if it doesn’t put him on a par with the league’s best first basemen (like Albert Pujols), reflects the reality of major league baseball: that it’s hard to find hitters that pump forty homers into the seats and more than 100 RBIs across the plate — and it’s even harder to keep them.