Mamelodi Sundowns dropped points but were fortunate to avoid defeat as they played out a goalless draw with Ajax Cape Town yesterday and now have only a four-point lead at the head of the Premier Soccer League table.Sundowns inched up to 59 points, while Wits sit on 55, with the two frontrunners still to go head-to-head next month. They are the only two sides who can win the league title.Ajax, with just a single victory in their preceding eight outings, blew two superb chances to score.The first came after just 11 minutes, with Sundowns turning over possession to allow a swift set of attacking passes from Ajax that saw Erwin Isaacs set up Prince Nxumalo directly in front of the goal, only for Dennis Onyango to make a point-blank save.Twenty minutes later there was an even better opportunity. A ricochet off the crossbar fell perfectly for Isaacs just metres from the goalline, but somehow he managed to hook it over the top.It took Sundowns until the 44th minute to create their first effort on goal when Leonardo Castro headed over from a free kick.Sundowns looked a lot better in the second half and Ajax seemed to have exhausted their energies in the opening stanza.A powerful header for Bangaly Soumaharo in the 72nd minute forced a fine save from Anssi Jaakkola in the Ajax goal and Keegan Dolly had a chance from a difficult angle soon after.But the match petered out in the end and a draw seemed a fair outcome.At the Isaac Wolfson Stadium, second-half substitute Lerato Manzini's hat-trick ensured Chippa United a 4-1 win over Platinum Stars. The other goal came from Andile Mbenyane, just six minutes into the game.Robert Ng'ambi scored a consolation goal three minutes from time. At Olen Park, Jomo Cosmos held Bloemfontein Celtic to a 0-0 draw, while Golden Arrows thrashed Mpumalanga Black Aces 4-2 at the Mbombela Stadium, thanks to Hellings "Gabadinho" Mhango, who scored all the goals...