Cowboys render coin toss mix-up moot, throttle Rams 44-21

Dallas Cowboys wide receiver Tavon Austin (10) scores a touchdown in the first half of an NFL football game against the Los Angeles Rams in Arlington, Texas, Sunday, Dec. 15, 2019. (AP Photo/Ron Jenkins)

Dallas Cowboys running back Ezekiel Elliott (21) jumps into the end zone with a touchdown in front of Los Angeles Rams defensive back Darious Williams (31) in the first half an NFL football game in Arlington, Texas, Sunday, Dec. 15, 2019. (AP Photo/Roger Steinman)

Dallas Cowboys quarterback Dak Prescott (4) talks with referee Walt Anderson (66) in the first quarter of an NFL football game against the Los Angeles Rams in Arlington, Texas, Sunday, Dec. 15, 2019. (AP Photo/Michael Ainsworth)

Los Angeles Rams quarterback Jared Goff (16) throws in the first quarter of an NFL football game against the Dallas Cowboys in Arlington, Texas, Sunday, Dec. 15, 2019. (AP Photo/Ron Jenkins)

Dallas Cowboys quarterback Dak Prescott (4) throws in the first quarter of an NFL football game against the Los Angeles Rams in Arlington, Texas, Sunday, Dec. 15, 2019. (AP Photo/Michael Ainsworth)

Dallas Cowboys head coach Jason Garrett watches from the sidelines in the first quarter of an NFL football game against the Los Angeles Rams in Arlington, Texas, Sunday, Dec. 15, 2019. (AP Photo/Roger Steinman)

Dallas Cowboys tight end Jason Witten, left, avoids a tackle by Los Angeles Rams defensive back Marqui Christian, right, and carries in for a touchdown in the first half of an NFL football game in Arlington, Texas, Sunday, Dec. 15, 2019. (AP Photo/Roger Steinman)

Los Angeles Rams quarterback Jared Goff (16) is about to be stopped short of the goal line by Dallas Cowboys outside linebacker Sean Lee, left, as Cowboys' Xavier Woods (25) moves in during the first half of an NFL football game in Arlington, Texas, Sunday, Dec. 15, 2019. (AP Photo/Roger Steinman)