Mac Meissner will enter the final round of the Charles Schwab Challenge firmly in contention after another steady performance at Colonial Country Club on Saturday. The PGA Tour player carded a 3-under 67 in the third round to move to 10-under overall, leaving him tied for third place and just two shots behind leader Eric Cole.Playing in Texas, a state with deep personal ties for Meissner, the 27-year-old continued his recent run of strong form. …