"If Rishabh would have been there, he could have made a huge impact. But now, let's wait and see what the future holds for us," said Pandya.
Lockie Ferguson faced the brunt of Dhawan's bat as the left-hander smashed him for two consecutive fours in the 15th over.
The hosts squared the series after winning second ODI at Ranchi on Sunday by seven wickets, on the back of Shreyas Iyer's 113 and Ishan Kishan's 93.
travelling reserves like Iyer and Ravi Bishnoi were included in the ODI series against South Africa apart from fringe players like Kishan, Sanju Samson, Mohammed Siraj and Kuldeep Yadav.
India are currently sixth in the Super League standings. Only Zimbabwe (12th) and Netherlands (13th) are below South Africa in the standings.
After pacer Shardul Thakur took three wickets while rest of the bowlers took a wicket each as India's disciplined bowling attack bundled out Zimbabwe for just 161 in 38.1 overs, the visitors were in some discomfort at 97-4.
In the T20I series opener, the Indian captain decided to play Iyer at number three. But, Iyer, who batted at number three in the previous ODI series, was out for a four-ball duck to left-arm pacer Obed McCoy.