Craig Ervine, unbeaten on 53, holds key for Zimbabwe, who are 73 runs away but have just two wickets, on the final day

Craig Ervine, batting on 53, holds the key for Zimbabwe, who are 73 runs from their target but have just two wickets in hand going into day five

Three wickets in the last hour of play for Rashid Khan put Afghanistan on the cusp of victory in the second test against Zimbabwe at Queens Sports Club in Bulawayo, with the home team still 73 runs shy of their target at the close of day four.