Shawn Mendes Replaces Himself at No. 1 on Billboard + Twitter Top Tracks Chart

“Mercy” moves after Mendes’ tweeted that the song hit No. 1 in the U.S. iTunes Store chart on Dec. 26. The placement foreshadowed a big sales total for “Mercy,” which sold 119,000 digital downloads in the week ending Dec. 29, according to Nielsen Music, ranking at No. 2 on the Digital Song Sales chart and spurring a 28-17 ascent on the Billboard Hot 100. It’s the fourth top 20-charting single for Mendes on the Hot 100.

Just below “Mercy” on the Billboard + Twitter Top Tracks chart, Wyclef Jean and Young Thug’s “I Swear” re-enters at No. 2, besting its previous high of No. 14 and giving Jean his first top 10 on the chart since it launched in May 2014. Jean promoted the Dec. 8-released music video for the track during the tracking week ending Jan. 1, triggering the song’s arrival. The clip has surged to 431,000 global views on YouTube through Jan. 4.

“Swear” also secures Young Thug’s third top 10 on the list and claims his best showing among 15 chart entries to date. The song surpasses his previous high, a No. 4 peak for “Pick Up the Phone,” with Travis Scott and featuring Quavo, last October.

Meanwhile, Musical.ly breakout star Jacob Sartorius claims his first Top Tracks hit as “Last Text” enters at No. 9. The tune -- which is the title track of the singer’s debut EP, due Jan. 20 -- arrives thanks to chatter generated by its lyric video, which premiered Dec. 22 and has blazed to 4.3 million global views on YouTube.

Sartorius, who already has two Hot 100 credits to his resume -- “Hit or Miss” (No. 72 peak) and “Sweatshirt” (No. 90) -- has benefited from a wave of social buzz, which crested to new highs in 2016: According to Google, he was the ninth most-searched artist of 2016, ranking directly behind Kanye West and just ahead of Guns N’ Roses.