Manny "Pacman" Pacquiao just turned the clock after an impressive performance against the undefeated welterweight champ, Keith Thurman at the MGM Grand Garden Arena. Fight fans around the world erupted after the determined senator knocked "One Time" in the first round, and rallied to win the match via split decision.

Notwithstanding the impressive win, doubters of the 8 division world champion continue to press-on with a decades-old issue that has been hounding the Filipino icon for years: Performance Enhancing Drugs.

More critics are asserting that the 40-year-old fighter from General Santos City, Philippines is using PEDs. Most notably after his brilliant display on Saturday against the much younger Thurman.

Despite numerous attempts of proving his innocence, detractors of the new WBA "Super" welterweight champion said that Manny couldn't move this well without the help performance-enhancing agents.

Manny's number one PED accuser Teddy Atlas even doubled down on his take after he beat the 30-year-old boxer on Saturday.

However, many were quick to defend the fighting senator. A Twitter user replied to Atlas' tweet and said that when a "40-year-old beats a young champion, he had to be cheating? Another added that the boxing personality "has always been critical of Pacquiao," and he's salty after his "lame-ass fire-fighter speech didn't work."

In fairness to Manny, there hasn't been any proof that he has been juicing. In 2012, a federal judge ordered Floyd Mayweather Jr. to pay $114,000 for avoiding inquest from Manny Pacquiao's lawyers after he accused the Filipino of PED use.

If there's anything more evident in the current issue, Manny has been toiling arduously to reach what he has today. On the contrary to the senseless accusations, Pacman's ability to leap from one weight class to another and still perform impressively is born out of hard work, not PEDs.

Even Keith Thurman believes that Manny is clean before the fight. The American boxer said that Pacquiao "is very active and stays in shape." He added that the Filipino pugilist "doesn't look anything out of the norm."

Before their match, both fighters have already undergone random drug tests twice. The tests were reportedly administered by officers of the Nevada State Athletic Commission (NSAC) based on the standard protocols of the Voluntary Anti-Doping Association or VADA.

Boxing Twitter