Walton, whose previous record was 292, outdistanced McIntosh by a commanding 25 shots.
John Yi shot 69 to win the individual title, while teammate Matt Flynn (71) was the runner-up. Connor Edison shot 74, and Michael Sheahan shot 75.
Walton has now won three of the four tournaments it has played in this season.
Harrison wins Kell Invitational: Harrison shot 311 as a team to win tournament at Woodstock’s Eagle Watch Golf Club, beating Etowah by four strokes.
Luke Schniederjans shot 75 to lead the Hoyas and tied for second overall. Sam Maryland shot 78, while Chad Barfield, Nick Bell and Matt McMahon each fired a 79.
Harrison will next play the Boys Invitational on March 31 at Atlanta Athletic Club in Johns Creek, home of the 2011 PGA Championship and this year’s U.S. Amateur.
Willman leads Harrison in tourney: Hailey Willman shot 82 to finish second overall in the championship flight of the Georgia Peach, an individual tournament held at Hard Labor Creek in Rutledge.
Caroline McLeod carded an 86, good enough for first in the A-flight division, and sixth overall. Ana Garcia shot 90 to finish second in the A-flight and ninth overall.
Kristen Huber finished second in the B-flight, shooting 60 in a nine-hole event.
Mount Paran Christian 12, Trion 0: Isaac Phillips was 3-for-5 including a three-run home run to help lead the Eagles to a Region 6A victory.
Reed Massi was 2-for-3 with three RBIs, Jake Palomaki went 3-for-3 with a triple, Matt Norton was 2-for-5 with RBIs and Landon Faulkner added two hits and an RBI.
Andrew Maxwell pitched the first five innings, allowing two hits and struck out eight. Palomaki came in for the last two innings and struck out six.
Mount Paran (11-2, 9-0) will host King’s Ridge on Tuesday.
Campbell 5, Westminster 3: The Spartans trailed 3-2 at the half before reeling off three straight goals to beat the host team in the final game of the Bob Sims Invitational.
Jarren Nixon compiled a hat trick for Campbell, with two of the goals coming in the second half, and added an assist. Monico Hernandez had a goal and three assists, while Alejandro Hernandez also scored a goal.
Goalkeeper Liam Grant also contributed with four second-half saves.
Campbell 3, Oconee County 1: Jarren Nixon, Alejandro Hernandez and Salvador Reyes each had goals in the Spartans’ first game of the Bob Sims Invitational.
The score was deadlocked at 1-all at the half before Campbell took the game over.
Arturo Lopez and Liam Grant shared duties in the goal and combined for seven saves.
Whitefield Academy 2, Christian Heritage 0: The Lady Wolfpack scored both goals in the second half for the Area 7A win.
Frances Hamilton scored on a free kick 4 minutes into the second half. Then, with 10 minutes left, Mary Kendrick scored on a cross by Sophie Kemether.
Lauren Burke preserved the shutout at goal with two saves for Whitefield (2-4, 2-2), which will play at Walker on Thursday.
Harrison 13, Allatoona 7: Alex Mowry scored three goals with an assist to lead the Hoyas to a non-area victory.
Zach Danneman scored two goals with two assists while Michael Fahsel, Carson Sorrels, and Connor Mills each added two goals.
Mitchell Barnes had 15 saves for Harrison (9-0), which will host Mill Creek on Wednesday.
Kennesaw Mountain 15, Whitewater 5: Dennis Bell scored eight goals and Ryan Clark four, giving Kennesaw Mountain the non-area home win.
Josh Davidson contributed a goal and three assists for the Mustangs (6-3), who led 9-2 at halftime. Donald Marke scored his first career goal.
Josh Ehrlich had six saves for Kennesaw Mountain, which will be at McEachern on Tuesday.