The Lake Oswego boys tennis team recorded its second narrow victory of the year over a top league opponent on Monday.
After eking out a win over Grant, the Lakers knocked off rival West Linn by an even closer margin, beating the Lions 9-8 in sets.
It marked the Lakers' first victory over West Linn in three years.
Lake Oswego recorded a clean sweep in singles while West Linn did the same in doubles, making for a 4-4 tie in matches.
But the Lakers were able to grind out a set in the fourth doubles match which proved to be the difference.
Lake Oswego was dominant in singles. Scott Goldner cruised to a win in the opening set of his match against Ian Risenhoover before Risenhoover had to withdraw from the match in the second set because of an injury.
The closest singles match of the day was at No. 2 where David Furman won the opening set against his opponent in a tiebreaker and then won 6-1 in the second.
Avinash Sankar and Spencer Lewis each picked up easy straight sets wins at No. 3 and No. 4 singles.
The Lakers had a tougher time in doubles where the Lions are always notoriously strong.
Reid Martin and Mitch Mechigian lost a close tiebreaker in the opening set at No. 1 doubles before falling 6-3 in the second.
The decisive match would be the last one of the day at No. 4 doubles.
The first set went to a tiebreaker with the Laker pair winning 8-6. That would be all the Lakers would need to seal the win.
West Linn's team would win the second set at fourth doubles and 10-point tiebreaker to decide the match but the team of Jeff Knees and Evans Stevenson did enough to secure the win.
The Lake Oswego girls tennis team also dispatched West Linn 6-2, winning a handful of close matches.
In singles, Blair Dozois cruised to a win at No. 1 6-1, 6-0 but the three other matches were very close.
The Lakers lost at No. 2 singles but at No. 3, Mehke Sethi ground out a 6-2, 3-6, 6-2 decision.
At No. 4, Libby Dozois won a first-set tiebreaker and then held on to win the second set 7-5.
In doubles, the Lakers lost at No. 1 but swept the remaining matches.
CC Moore and Allison Buchman lost the first set 0-6 but quickly regained their footing and won the next two 6-0, 6-4.
At No. 3, Kelsey Fuson and Maddie Mitchell won a tough match 6-4, 7-5 while Yasmine Genena and Morgan Reno cruised to a straight sets win at No. 4.