UFC Fight Night 78: Neil Magny steps in on 17 days notice to fight Kelvin Gastelum after Matt Brown injured

Call him the "hardest working man in the fight business."

Welterweight Neil Magny will step up on short notice to take on Kelvin Gastelum in the five-round UFC Fight Night 78 main event in Monterrey, Mexico, on Nov. 21, 2015, with Matt Brown injured (read full details here.)

Check out how it all went down:

Tenemos nuevo evento estelar para #UFCMonterrey @NeilMagny vs @KelvinGastelum los detalles: https://t.co/nnh7mVK12Y pic.twitter.com/nIOxumnAqQ

— UFC NETWORK (@UFCNetwork) November 4, 2015

Here I come to save the day! #staytuned #fightersfight @ufc #ag2g pic.twitter.com/9Oi40LBQPM

— Neil Magny (@NeilMagny) November 3, 2015

It's the fifth appearance of the year for the busy American, who is 3-1 in 2015. Magny, 16-4, also fought five times in 2014, winning all of his appearances.

The No. 12-ranked Magny last stepped in on short notice in August, pulling off a three-round win over Brazilian Erick Silva. Now, the Colorado native will square off with No. 15-ranked Gastelum, who is looking to prove he can make the grade at 170 pounds after flunking the weigh-ins at UFC 180.

The FOX Sports 1-televised card (see it here) will also feature a Featherweight bout between Ricardo Lamas and Diego Sanchez, a Flyweight showdown pitting Henry Cejudo against Jussier Formiga, and The Ultimate Fighter (TUF): "Latin America 2" finals.