If this match is drawn then it willl be just due to Zimbabwe first innigs. They were in the hunger of more and more runs, they scored very big score, that was 586 and took a lot of time in that innings. On the top Zimbabwe did not have good bowling attack that pick the wickets of Afghanistan so the most probable result could be a drawn match.
Rahmat Shah is playing one of the calmest innings i have seen in recent times. He has scored 156 runs in 308 balls, meaning he is having a strike rate of almost 50. These days it is hard to find such a low strike rate even in the test matches. Thanks to his innings, Afghanistan have almost made 300 runs and lost only 2 wickets. The way Afghanistan is batting i have no doubt that Afghanistan will reach the high Zimbabwe total by tomorrow, that is day 4. The only concern here is that even though both the teams batted well, the match is headed towards a draw.