South can't find answer.
Clackamas caught one early break on Tuesday against South Eugene, but it was the only break the Cavaliers needed.
Clackamas scored a goal against the run of play in the first half, then settled in for a gritty defensive performance that lifted the visiting Cavaliers to a 1-0 upset over the Axemen and a berth in the quarterfinals of the Class 6A boys soccer playoffs.
"It's a tough way to lose, but that's how soccer goes," South Eugene coach Jurgen Ruckaberle said. "We got the two better chances in the first half. If we put those away, we probably win the game. But the longer the game goes, the harder they're going to defend and the harder it is for us to break them down."
In the 13th minute of Tuesday's playoff game, Clackamas (9-5-2) midfielder Andy Li whipped in a long cross from the right side that caused South goalkeeper Mak Lindquist to come off his line and punch the ball away. Unfortunately, it caromed directly to striker Adan Trejo, who settled the ball with one touch and fired a hard shot into the lower left corner of the goal for a 1-0 Clackamas lead.
South Eugene (11-4-1) looked like the more threatening side for the rest of the half, getting two scoring opportunities but failing to convert either. In the 25th minute, forward Matt Arbogast ran onto a ball down the right sideline, then cut inside for a one-on-one scoring chance, but Clackamas goalkeeper Carlos Villafan came out to make a sliding save.
Eight minutes later, South's Ian Tarnovsky turned just outside the 18-yard box and slid a perfect through pass to Arbogast, who took a touch around Villafan and floated a shot toward the right side netting only to watch it ricochet off the far post.
"We had our chances in the first half. That's where we should have scored," Ruckaberle said. "(Clackamas) won most of the battles in the air, and I think that's where the game was decided. We just couldn't penetrate on the ground and we didn't win a whole lot in the air to even that part out."
South continued to press in the second half but simply could not find a way through the Clackamas defense. The Cavaliers turned away two consecutive corner kicks in the 56th minute and watched as the Axemen muffed a free kick opportunity from just outside the penalty box in the 73rd.
Clackamas will face Grant (11-2-2) in the quarterfinals.