Kevin Brown has tunnel vision, which is the only physical ailment he’s had this season that shouldn’t have an adverse effect on his pitching.

Never a candidate for Mr. Congeniality, Brown has been particularly ornery this season. Early in the year, a parasite and a lower-back strain caused him to lose some 15 pounds and spend seven weeks on the disabled list.

Then he had his infamous fight with a clubhouse wall Sept. 3. The wall won on a TKO as Brown broke his left, non-pitching hand.

So when a reporter started to ask Brown about his physical state at this time of the year, he began shaking his head. Brown is talking about body parts.

“At this point of time in the season you look toward the goal,” Brown said. “You try to ignore everything else you can, do what you can to be as good as you can and try to go out there and get the job done.”

Brown gets a chance to do the job – and to give the Yankees a 3-0 lead in the ALCS – tomorrow night, when he takes the mound in Fenway Park against Boston’s Bronson Arroyo.

Brown’s last visit to Fenway was a nightmare. In his first start back since breaking the hand, the Red Sox gave Brown the pinata treatment.

He lasted less than an inning, giving up four earned runs on six hits, including one home run. Prior to that start, Brown said the physical problems might have been a blessing in disguise because he had regained the weight he lost and felt especially strong in September.

But before going six innings against the Twins in Game 3 of the ALDS, Brown bemoaned the fact that the back and the parasite had taken their toll. After he got the win in Game 3, Brown said he was fed up with talking about his physical condition.

“Emotionally, it’s been tough,” Brown said yesterday. “It’s been up and down. It’s very difficult going through what I went through the whole season. Having an opportunity to be here in this situation in postseason with a great group of guys that played their hearts out all year and have had comeback after comeback after comeback all season long, it’s an honor and it’s a privilege.”

Brown owes his teammates, who have posted 64 come-from-behind wins this season, at least that much.

When he got rocked in Boston, the Yankees went into the postseason with their most inconsistent starting rotation in years. Brown regained some of his teammates’ respect with his six innings of one-run ball against the Twins.

But tomorrow he returns to Fenway, where several of Brown’s pitches were hammered into the green monster. What can Brown do for the Yankees? Put them in charge of the series.