The Hornets trio pulled off the triple rejection with about 1:20 remaining in the first quarter of the 110-107 win on Monday at Spectrum Center in Charlotte, N.C.
Milwaukee held a 32-30 advantage before Middleton received a pass from Matthew Dellavedova. He backed down Tony Parker before driving by his right hip. Middleton then picked up his dribble and jumped toward the rim. Kidd-Gilchrist, Williams and Lamb also jumped toward the rim. Each player raised an arm as they all touched the ball with one hand and sent it out of bounds.
There were at least five hands on the ball at one point, but Kidd-Gilchrist received credit for the swat on the stat sheet.
Kemba Walker and Lamb each scored a game-high 21 points for the Hornets. Giannis Antetokounmpo had a team-high 20 points, 13 rebounds and nine assists for the Bucks.
Middleton had 14 points and nine rebounds in the loss.