Fred Besana passed for 227 yards as the Oakland Invaders capitalized on blunders by the visiting Boston Breakers to win, 17-16, yesterday and clinch the Pacific Division title.

Boston, which got 122 yards from halfback Richard Crump, hurt itself with third-period mistakes.

The Invaders recovered a fumble on their 48 and moved to the Breakers' three-yard line with the help of three penalties. Ted Torosian bulled into the end zone from a yard out on the first play of the final period to give Oakland a 17-13 lead.

Boston later had a touchdown nullified by a holding penalty, and a 24-yard field goal by Tim Mazzetti closed the gap to 17-16 with 6:01 left.

There were more than 5,000 no-shows out of a paid gate of 30,396, but those who came saw the Invaders gain the playoffs with a 9-8 record. The Breakers (10-7) still have a slim chance to win a wild-card playoff spot.

The Breakers snapped a 10-10 halftime tie when Mazzetti kicked a 20-yard field goal with 5:04 left in the third period.

Besana opened the scoring when he finished off a 59-yard drive by throwing an eight-yard pass to halfback Louis Jackson in the end zone for Oakland's first touchdown with 5:34 left in the first period.