Guido Schramm made the most of the television exposure he received Friday night on short notice.

The Argentinean junior middleweight dealt American prospect Jahyae Brown his first professional defeat in the co-feature of Showtime’s telecast from Cache Creek Casino Resort in Brooks, California. Buenos Aires’ Schramm (16-1-1, 9 KOs) took control in the second half of their 10-rounder and won a majority decision.

Judges Kermit Bayless (97-93) and Marshall Walker (98-92) scored Schramm a decisive winner. Judge Ray Daneso scored their bout a draw, 95-95.

The 23-year-old Brown, of Schenectady, New York, slipped to 13-1 (9 KOs).

Schramm was supposed to fight southpaw Jamontay Clark on the Sebastian Fundora-Brian Mendoza undercard Saturday night at Dignity Health Sports Park in Carson, California. He instead took this fight with Brown on barely one week’s notice because it was a televised fight.

Schramm and Brown agreed to fight when the original “ShoBox” co-feature, Frency Fortunato-Neri Romero, was scrapped because Romero suffered an injury while training.

The 27-year-old Schramm attempted to knock out a fatigued Brown during the 10th and final round. Brown made it to the final bell, but he clearly lost control of their bout in its second half.

Schramm landed to Brown’s body and head just after the halfway point of the 10th round.

Brown and Schramm traded left hooks about 30 seconds into the 10th round. A fatigued Brown held Schramm about 15 seconds later.

Schramm blasted Brown with a right hand as Brown backed into the ropes toward the end of the ninth round.

Schramm backed Brown into the ropes as soon as the ninth round began. He snapped back Brown’s head with a right hand about 25 seconds into the ninth round.

Schramm threw many more punches in the eighth round and continued to build on his momentum.

Schramm was busier and accurate during the seventh round. Schramm punctuated a combination with a right uppercut that landed with 35 seconds to go in the seventh round.

Schramm pressed the action throughout the sixth round and hammered away at Brown, who threw enough punches to keep Schramm from overwhelming him. A right-left-right combination by Schramm backed Brown into a corner 35 seconds into the sixth round.

Schramm landed punches in the fifth round, but he couldn’t hurt Brown, who often fired back once Schramm connected. Brown blasted Schramm with a right hand when there were about 30 seconds on the clock in the fifth round.

With about 45 seconds to go in the fourth round, Brown and Schramm stood toe-to-toe and traded hard shots.

Brown connected with multiple right uppercuts after Schramm landed a left hook about a minute into the fourth round.

An overhand right by Brown landed in an exchange with just over 30 seconds remaining in the third round. Brown countered Schramm with crisp counter shots in the middle minute of the third round.

Schramm attacked Brown’s body less than a minute into the third round.

Brown backed up Schramm with a right uppercut just before the midway mark of a strong second round for Brown. They exchanged hard punches just prior to Brown landing that shot.

Brown landed two left hands and got out of Schramm’s punching range in the final 10 seconds of the first round.

Brown landed a left hook in an exchange with 35 seconds to go in the first round. Schramm threw numerous hard shots at Brown in the opening minute of their fight.

Keith Idec is a senior writer/columnist for BoxingScene.com. He can be reached on Twitter @Idecboxing.