Floyd Mayweather is showing few signs of slowing down following his retirement after footage emerged of him showing off his lightening-quick punching speed.The 44-year-old rolled back the years with a flurry of rapid strikes during a recent training session with his coach Gerald Tucker - who is also trainer to ex-UFC champion Tyron Woodley.Mayweather uploaded footage of the workout to social media, writing: "It’s ok to remind y’all that I’m #TBE (The Best Ever) sometimes.."The American officially retired undefeated in 2017 after beating UFC megastar Conor McGregor in a lucrative crossover fight to claim the 50th win of his professional career.He's returned to the ring twice since then, but only for exhibition bouts against featherweight.
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