The 23 year-old, who has built himself a reputation for outlandish remarks since bursting onto the scene last year, failed to live up to his own hype as the Londoner was pushed all the way by fellow lefty Hinostroza.
Patel may well have squeaked through the four-rounder with a victory had he not been floored in the final round by ‘El Bravo’ at The Halls and eventually had to settle for a 38-38 stalemate on referee Kevin Parker’s card.
In the heavyweight headliner, Sam Sexton continued his good form with a seventh straight win on home soil. The former Commonwealth champion, 31, halted Peter Erdos in four rounds to move closer to a British title shot.
Also on the bill in Norfolk, middleweight Billy Bird out-pointed Antonio Petrov over four sessions, whilst Zephan Morris remains unbeaten at super-featherweight following a six round points win over Ben Mulligan.
Debutants Ryan Frost and Alan Ratibb scored welterweight triumphs over journeymen Ali Wyatt and Danny Donchev respectively, whilst 154 pound campaigner Joe Hurn is now 6-0 after a first round stoppage of Latvian Arturs Iljins.