The pop charts this week are full of milestones, from a trio of K-pop acts crashing the top of the album chart to the year's biggest hit matching the longest-ever run atop the singles chart.

Five Finger Death Punch extends its record for the most consecutive No. 1s on Billboard 's Mainstream Rock Airplay chart, as "I Refuse" tops the July 26-dated list, becoming the band's 12th leader ...