West Indies' trio of one-day international debutants all impressed as Jason Holder's side completed a 62-run victory over Sri Lanka in Harare on Wednesday.
Sri Lanka had beaten Zimbabwe comfortably on Monday in the first match of a seven-game tri-series, but were found wanting on this occasion despite limiting their opponents to 227.
Shai Hope and Rovman Powell - two of the new faces in the Windies' line-up - compiled contrasting innings of 47 and 44 respectively after the Windies were inserted, while Jonathan Carter top-scored with a career-best 54.
West Indies' third debutant, Ashley Nurse, then chipped in with 3-46 as Sri Lanka laboured to 165 all out.
A miserable start to Sri Lanka's run-chase saw Holder (2-16 from eight overs) have Dhananjaya de Silva (3) and Kusal Mendis (4) caught behind the wicket in successive overs, either side of Kusal Perera (4) being run out by Johnson Charles' direct hit from square leg.
Sri Lanka skipper Upul Tharanga adopted an extremely cautious approach after coming in at 16-3, taking up 45 balls to make 12.
After Niroshan Dickwella was caught at third man off Shannon Gabriel (3-31) for 28, Tharanga and Asela Gunaratne (18) each fell to Nurse, who also had Sachith Pathirana dropped at backward point on nought.
Pathirana went on to make 45 off 40 balls, sharing 60 for the seventh wicket with Shehan Jayasuriya.
However, Nurse eventually accounted for Pathirana in the 38th over, courtesy of a leading edge to long-off, and the remaining wickets came quickly for the Windies, Gabriel picking up the last two.
A much-changed West Indies side had also made a shaky start with the bat, losing openers Charles (2) and Kraigg Brathwaite (14) cheaply.
Yet Hope dug in to share in useful stands with Evin Lewis (27) and Carter, the latter able to lift his team's scoring rate as he brought up his second ODI fifty from 58 balls.
Further acceleration was provided by Powell, who cleared the ropes on three occasions in his 29-ball cameo, before a late batting collapse that proved immaterial.