2 Baylor stayed undefeated with an 84-72 win over Auburn in the Big 12/SEC Challenge on Saturday.
Adam Flagler, another transfer, led the Bears with a season-high 19 points, while Butler had 16, MaCio Teague 15 and Mayer 13.
He played 34 games at Auburn as a freshman in 2017-18 before transferring to Baylor, and Butler was initially enrolled at Alabama, though he never played for the Crimson Tide.
AdBaylor: The Bears trailed for only 61 seconds against Auburn, and have trailed only 45:21 of 640 minutes played this season.
Baylor is 7-1 in Big 12/SEC Challenge games, the best record by any team in either league in the annual showdown.