After a late call up to the Champions Tour event in Arizona, David Mckenzie was having a good day out in the final round as he raced to 4-under through 12 holes to move up the leaderboard.

The 50-year-old Victorian was listed as an alternate for the Cologuard Classic at the start of the week but eventually got into the field and opened with a 2-under 71 to be mid field after 18 holes.

However, the Omni Tuscon National course got the better of him on day two as he gave both shots back to drop down the standings.

A hot start in the third and final round was encouraging but dropped shots at his 14th and 16th holes were costly, Mckenzie slipping from inside the top-40 to a share of 50th place.

The tournament was his second start of the year and after a T24 finish in his first event he now sits 63rd on the Charles Schwab Cup table where the top-30 retain playing rights at the end of the season.