Bangl-adesh will need to produce a record fourth-innings total to beat Zimbabwe in the first Test after 16 wickets tumbled on the third day on Friday.
Bangladesh, replying to the home team's 389, lost their last five wickets for no run as they were skittled out for 134 before Zimbabwe stretched their huge lead to 442 by reaching the close on 187 for seven.
Zimbabwe skipper Brendan Taylor hit an unbeaten 81.
score board
ZIMBABWE (I Innings): 389
BANGLADESH (I Innings, O/n: 95/1):
Islam lbw Meth 43
Nafees c Maruma b Jarvis 29
Ashraful c Waller b Masakadza 38
Mahmudullah b Meth 3
Shakib c Sibanda b Masakadza 5
Rahim lbw Masakadza 3
Hossain c Mutumbami b Jarvis 7
Gazi c Waller b Masakadza 0
Haque Jr b Jarvis 0
Rubel b Jarvis 0
Robiul (not out) 0
Extras (B-4, LB-1, W-1) 6
Total (all out, 54.1 overs) 134
Fall of wickets: 1-53, 2-102, 3-112, 4-123, 5-124, 6-134, 7-134, 8-134, 9-134.
Bowling: Jarvis 16-8-40-4, Meth 20-6-41-2, Masakadza 14.1-4-32-4, Chigumbura 3-0-16-0, Cremer 1-1-0-0.
ZIMBABWE (II Innings):
Maruma lbw Robiul 10
Sibanda b Robiul Islam 4
Masakadza c & b Robiul 0
Taylor (batting) 81
Waller c Nasir b Robiul 4
Chigumbura c Jahurul b Robiul 27
Mutumbami lbw Robiul 0
Cremer (run out) 43
Meth (batting) 13
Extras (LB-2, W-2, NB-1) 5
Total (for 7 wkts, 56 overs) 187
Fall of wickets: 1-7, 2-9, 3-16, 4-27, 5-84, 6-84, 7-163.
Bowling: Robiul 17-1-55-6, Rubel 6-0-31-0, Shakib 9-2-22-0, Haque Jr 11-2-34-0, Gazi 9-0-24-0, Mahmudullah 4-2-19-0.
