The USL-1 Islanders face Mexican club Cruz Azul in the semifinal round, which kicks off in late March. Cruz Azul beat UNAM, 1-0, on Wednesday to win that series, 2-0, on aggregate.
Puerto Rico teetered on the edge for much of the match before prevailing and winning the series, 3-1, on aggregate. Had it conceded a goal and lost, 1-0, it would have been eliminated by the away-goals tiebreaker. Instead it withstood numerous attacks, and broke away just seconds into stoppage time to ice the match.
Addlery, who had the first of two Puerto Rico goals in the first leg, raced onto a through ball and drilled a shot from the edge of the penalty area past the ankles of transfixed goalie Juan Obelar.
Marathon fielded its own MLS representation. Former Fusion striker Saul Martinez nearly won the series for Marathon with a thunderous strike in the 82nd minute that utterly beat Gaudette but crashed off the crossbar.
Gaudette had to limp through the final minutes after taking several hard hits during furious Marathon assaults, yet he and his teammates persevered. His sharp reflexes and confident handling covered what a very resolute back line couldn't deflect, and a disbelieving crowd grew more frantic as Puerto Rico repelled chance after chance.
(Clarke, a native of Newry, Northern Ireland, was head coach of FC Dallas from 2003 to 2006. He was succeeded by countryman Steve Morrow, who was born in Belfast. Clarke took over the Islanders in 2007 after Virginia Beach Mariners, who had hired him two months earlier, folded.)
The USL can claim two representatives in the semifinals, as compared to none for MLS, if Montreal can parlay its 2-0 first-leg edge into a series victory. Montreal would play Atlante, which eliminated the last MLS entrant, Houston, with a 3-0 second-leg win in Cancun Tuesday.