Play was suspended on Sunday because of darkness with the resumption due Monday morning.

Todd and Taylor are at 20-under with Harris English and Carlos Ortiz joint third a shot off the pace and Adam Long solo fifth at 18 under.

Ortiz is challenging for his first PGA Tour victory before a home crowd in Mexico.

He was one shot behind and chose not to play the 18th hole when it became too dark for him to see properly.

RIGHT: Taylor is tied for the lead with Todd with four holes to play. PHOTO: Cliff Hawkins/Getty Images.

Todd had a two-shot lead until he failed to get up-and-down from just off the green on the par-5 13th, and then hit a heavy chip and missed a seven-foot par putt on the next hole.

Coming off a Tour victory in Bermuda two weeks ago, Todd shot a six-under 65 on Sunday morning to be 16-under and take a one-shot lead into the closing round.

Taylor (66) and English (68) were next best at 15-under.

The tournament did not start until Friday because heavy rain washed out the day's play on Thursday.