Kansas City Chiefs safety Tyrann Mathieu called out Denver Broncos rising sophomore quarterback Drew Lock on social media on Monday, telling the former Missouri signal-caller not to challenge the Super Bowl champion defensive back.

“Drew [Lock] gon be good but he better stop playing with me,” the 28-year-old Chiefs safety wrote on Twitter today while responding to a tweet about Broncos wide receiver Courtland Sutton being “haunted” by a pass break-up by Mathieu from the past season.

Mathieu joined the Chiefs and Broncos in the AFC West during the 2019 NFL campaign after signing with Kansas City to the tune of a three-year, $42 million deal last offseason following a single season with the Houston Texans in the AFC South in 2018. A one-time Pro Bowl safety with the Arizona Cardinals, Mathieu made an immediate impact for Kansas City's secondary and helped the Chiefs defeat the Broncos in the two division rivals' pair of meetings during the 2019 season, with the Super Bowl LIV champions limiting Denver to a combined nine points across the two tilts.

Mathieu and the Chiefs later steamrolled the Texans in the AFC Divisional Round in Jan. 2020 despite Houston jumping to a double-digit early first-quarter lead.

Lock, 23, entering his second year in the NFL and with the Broncos, came into his own after veteran gunslinger Joe Flacco, acquired (and later released) by Denver last spring went down with an injury. Lock made five starts in his debut season with the Broncos, winning four games, and his only loss came against Mathieu and Kansas City's defense—a bout he did not connect for a touchdown and instead threw one interception.

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