In Showtimes's featured bout, Amir Khan (30-3, 19 KO's) pulls out a dominant win over Devon Alexander (26-3, 14 KO's) during their 12 round welterweight showdown at the MGM Grand.

"I really believe I earned my shot against the best fighter in the world, which is Floyd Mayweather," Khan said. "I believe he'll have problems with my speed, movement and accuracy. I'm going to leave it to my team and let's hope we get that fight."

"He was the better man tonight," Alexander said. "My coach told me to get off and I wasn't getting off. I could have caught him I just didn't do it tonight. I was supposed to follow the game plan, I was moving good but I just couldn't move forward and get off."

Under Cards recap:

• Keith Thurman vs Leonard Bundu


• Abner Mares vs Jose Ramirez


• Jermall Charlo KO 3 Lenny Bottai

Here are the rest of Khan vs Alexander results:

• Jermell Charlo UD 10 Mario Lozano - Junior Middleweight


• Errol Spence Jr. TKO 5 Javier Castro - Junior Middleweight


• Victor Ortiz TKO 3 Manny Perez - Welterweight 


• Yoshiro Kamegai TKO 4 Oscar Godoy- Junior Middleweight


• Beibut Shumenov RTD 5 Bobby Thomas Jr. - Cruiserweight

• Keith Thurman - $500,000


• Leonard Bundu - not yet filed with the commission.


• Abner Mares - $250,000


• Jose Ramirez - $15,000


• Jermall Charlo - $50,000


• Lenny Bottai - not yet filed with the commission.

When I walked into the gym for the first time you could hear the bags being punched, you could smell the sweat and the blood. It felt like home." - Amir Khan

"I made it my point to become something in life ... A lot of people didn't make it out, but I did." - Devon Alexander

Getting knockouts and creating knockouts, that's what 'One Time' is all about" - Keith Thurman

Guerrero vs. Kamegai under-card fighters held a conference call include fighters Gary Russell Jr., Vasyl Lomachenko, Devon Alexander and Jesús Soto Karass. 

Guerrero vs. Kamegai is a 12-round fight promoted by Golden Boy Promotions and sponsored by Corona and AT&T. In the co-main event Gary Russell Jr. faces Ukrainian star Vasyl Lomachenko in a 12-round showdown for the vacant WBO World Featherweight Title and in the opener Devon Alexander will face off against Jesus Soto Karass in a 10-round super welterweight match up. It will take place at StubHub Center in Carson, Calif., and will air as the SHOWTIME CHAMPIONSHIP BOXING® main event live on SHOWTIME (10 p.m. ET/7 p.m. PT) and will be available in Spanish via secondary audio programming (SAP).

Tickets priced at $150, $75, $50 and $25, plus applicable taxes, fees and services charges, and are available online at AXS.com, by phone at 888-9-AXS-TIX (888-929-7849) and at StubHub Center Box Office (Monday through Friday from 10 a.m. PT to 6 p.m. PT). VIP Suites are available by calling 877-604-8777. For more information on group discounts or VIP packages, please call 877-234-8425.

For more information, visit www.goldenboypromotions.com,www.sports.sho.com andwww.homedepotcenter.com, follow on Twitter at www.twitter.com/GoldenBoyBoxing,www.twitter.com/shosports, www.twitter.com/StubHubCenter, www.twitter.com/GhostBoxing,www.twitter.com/MrGaryRussellJr, www.twitter.com/VasylLomachenko andwww.twitter.com/TheRealDevonA, follow the conversation using #GuerreroKamegai or become a fan on Facebook at www.facebook.com/GoldenBoyBoxing, www.facebook.com/SHOBoxing andwww.facebook.com/StubHubCenter.