Shawn Mendes in the video for "Treat You Better."

Shawn Mendes in the video for "Treat You Better."

Courtesy Photo

Shawn Mendes crowns Billboard's Adult Contemporary radio airplay chart (dated Feb. 11) with "Treat You Better." As the song jumps from No. 5 to No. 1, it becomes his second AC leader in as many visits. His first entry on the list, "Stitches," topped the tally for two weeks beginning last April 30, while going on to become the No. 1 song on the 2016 year-end AC chart.

Mendes is the first artist to send his first two charted AC titles to No. 1 since 2012 American Idol champ Phillip Phillips, who led with "Home" and "Gone, Gone, Gone" in 2013. Before Phillips, Josh Groban was the first artist to reign in his first two AC appearances, with "To Where You Are" and "O Holy Night" in 2002.

Vaulting 5-1, "Better" makes the largest leap to No. 1 for a song in its first week atop AC (excluding holiday fare, which often surges from outside the top 10 to No. 1, given the condensed nature of seasonal airplay) since Colbie Caillat's "Bubbly" also soared 5-1 on Jan. 19, 2008.

"Better" previously ruled Billboard's Adult Pop Songs chart for six weeks, where it also became Mendes' second No. 1, likewise following "Stitches." Meanwhile, Mendes adds his third AC hit, as "Better" follow-up "Mercy" debuts at No. 30. Both "Better" and "Mercy" are from his second full-length album, Illuminate, which became his second No. 1 on the Billboard 200 upon its Oct. 15, 2016, debut. His first LP, Handwritten, bowed at No. 1 on May 2, 2015.

All charts will update tomorrow (Jan. 31) on Billboard.com.