The Englishman posted a three-day total of 15-under-par 201 to take a commanding seven-shot lead over Malaysia's Rashid Ismail who signed for a 71 to take second place in the PGM ADT Masters at the A'Famosa Golf Resort in Malacca.
Korea's Kim Ji-hoon returned with a 71 to take third place on 210 while Japan's Go Nakauchi is a further shot back in fourth place after a 211. Malaysia's R. Nachimuthu posted a 72 to take fifth place at the RM180,000 (approximately US$60,000) ADT event, which is the third ADT event to be staged this season.
Richardson continued his sizzling form which put him within touching distance of a win which will put him in good position of finishing in the top-three of the Order of Merit at the end of the season and earn his Asian Tour card for 2013.
Despite opening with a bogey on the first hole, Richardson responded quickly with a birdie on the sixth hole before going on to eagle the seventh hole. He then completed a superb outward-nine with another birdie on the ninth hole.
"Once again, I played really solid today and I'm really happy that I'm going into the final round with a huge lead. But then again, I cannot be complacent as anything can happen in golf," said Richardson.
"I'm really looking forward to a final good round tomorrow as that will put me in a good position for the rest of the season," added Richardson.
Launched in 2010 with the aim of creating a career pathway for professional golfers in Asia, the ADT has gained support from Corporate Asia, growing its schedule from five tournaments in the first season to eight tournaments in the 2011 season.
The leading three players on the Asian Development Tour Order of Merit will earn coveted Asian Tour cards for the following season, ensuring a proper career pathway for aspiring professionals.