Ngarava first impressed in the Under-19 World Cup early last year when he took five wickets in as many matches, including 4 for 10 in nine overs against South Africa. Ngarava was also at the receiving end of the Mankad dismissal at the same event, when he was the last man out as West Indies pacer Keemo Paul whipped off the bails at the non-striker's end to run him out and seal the win with a quarter-final spot at stake. More recently, Ngarava made his List A debut in the five-match series against Afghanistan A, and in his second match in the same series took 3 for 24.
Mumba, the 21-year-old right-arm pacer, earned his maiden Test and ODI caps last year when Sri Lanka visited the country. He had a lacklustre start to his debut Test, taking 1 for 101 in 24 overs, but hit back with four scalps in the second innings. In his only ODI, he conceded 31 runs in four overs without picking up a wicket. Mumba was also part of the series against Afghanistan A and snared a five-wicket haul in the second ODI, albeit in a losing effort.
The two pacers join the 14-man squad that was named last week; two spots had been left open until the end of the domestic List A competition, the Pro50 Championship, which concluded on Sunday. Zimbabwe face Afghanistan in five ODIs across 11 days. All the matches are scheduled to take place at the Harare Sports Club.