The first chance of the match fell on the head of Evans Rusike whose attempt from a corner-kick was cleared off the line by Frosler who was well positioned with Grobler lurking at the back post, in the 23rd minute.
Kaizer Chiefs extended their winless run to six matches after drawing 1-1 with SuperSport United at FNB stadium on Saturday.
Chiefs coach Gavin Hunt made several changes to the Chiefs starting line-up. Darrel Matsheke was suspended while Philani Zulu was demoted to the bench. Anthony Akumu came in for the latter, while Bernard Parker, Willard Katsande, Njabulo Blom and Leonardo Castro also came into the starting lineup.
Chiefs opened the scoring through Reeve Frosler, but Bradley Grobler scored from the penalty for SuperSport before Ronwen Williams made two fine saves late on to earn the visitors a point on a sizzling afternoon in Soweto.
The result moved United within four of points of league leaders Mamelodi Sundowns while Chiefs leapfrog Bloemfontein Celtic and up to eighth.
Six minutes later, Frosler opened the scoring on the day and his Amakhosi account with a well taken goal. The Chiefs left-back won the ball inside the SuperSport penalty area before curling the ball into the back of the net with his right foot via the inside of the post, with Williams rooted to the spot.
United went in search of an immediate reply and Rusike forced Itumeleng Khune into a save on the cusp of halftime. Rusike's looping header had the Chiefs shot-stopper worried but in the end he made a comfortable save.
Chiefs looked in control of the match only for Anthony Akumu to pull Thamsanqa Gabazu's jersey in the area, leaving the referee with little choice put to point to the spot. Grobler stepped up and calmly dispatched the ball into the back of the net in the 67th minute for his 13th goal of the season, as he continued his scoring streak against Amakhosi.
It was all Chiefs in the closing stages with Williams showcasing why he is currently Bafana Bafana's preferred choice between the sticks with Molefi Ntseki watching on from the stands.
The SuperSport captain showed cat-like reflexes to palm Akumu's volley onto the crossbar and out of danger in the 77th minute, but left the best for last. Nkosingiphile Ngcobo ghosted into the area and looked sure to score with four minutes of regulation time remaining but Williams got down low to his right to make a world-class save as SuperSport held on for a point.
Meanwhile Chippa United and TS Galaxy played to a 1-1 draw in a 2020-21 DStv Premiership match at Nelson Mandela Bay Stadium in Port Elizabeth.