Khalfani Muhammad's speed has NFL teams taking a closer look at the California running back ahead of the NFL Draft.

Muhammad worked out for the Broncos on Wednesday, a source told Sporting News. Denver was the sixth team to meet with him. More teams are in line to host him.

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Muhammad, who did not participate in the NFL Combine, ran a 4.34-second 40-yard dash at his Pro Day; more impressively, he ran outdoors in the rain. He also posted solid times in the three-cone drill (6.74 seconds), 20-yard shuttle (4.27 seconds) and vertical jump (38.5 inches).

There’s a lot more to like about Muhammad than just his world-class speed, though. Versatility is one of those traits; he compiled 827 rushing yards, 584 kick return yards and 132 receiving yards last season for the Golden Bears.