Overlee completed its sixth consecutive undefeated season in the Northern Virginia Swim League Saturday, defeating Mansion House, 280-122.
The Division I team has a 30-0 record over six years for Coach Bob York, who has decided to retire.
Megan McMorrow of Overlee set a league record of 31.09 seconds for the 50-meter backstroke in the 15-18 age group, breaking Heather Strang's 1982 record of 31.2.
Mansion House's Amy Rymiszewski broke her league record with a time of 15.48 seconds in the 8-and-under 25-meter freestyle. The old record was 16.14.
In Division II, Tuckahoe and Lake Braddock tied for first place. In Division III, Orange Hunt finished first. Kings Ridge, Old Keene Mill and Truro tied for first in Division IV. Division V's winner was Riverside Gardens.
In Division VI, Highland Park and Hollin Meadows tied for the top spot following a dual meet a week ago Saturday in which Hollin Meadows defeated Highland Park, 203-199.
Foxhunt won Division VII, Canterbury Woods took Division VIII and Hunt Valley tied Fox Mill Woods for first place in Division IX. Pinecrest won Division X, Dunn Loring Division XI, Kent Gardens Division XII, Rolling Forest Division XIII, Hollin Hills Division XV and Country Club Hill Division XVI.
In the Colonial League, Christy Keyes, 11-12, and Sarah Keyes, 13-14, of Arlington Knights of Columbus set butterfly team records in 34.26 and 32.22 seconds, respectively.