Warmsworth moved to within touching distance of the Division Two promotion places with victory over Upper Haugh.
Upper Haugh batted first and set the target at 133, with Matthew Edmondson top scoring with 39.
Tom Hyde produced an excellent return of 5-17.
Warmsworth needed just two wickets and 23 overs to pass Upper Haugh’s score.
Andrew Haywood opened with 47 and skipper Chris Hadley was 33 not out at the close.
The Doncaster club are now just three points behind Phoenix, who occupy the fourth automatic promotion spot.
Sprotbrough moved out of the relegation zone after a vital four wicket win over Frecheville.
Skipper Daniel Ratcliffe scored 52 and Daniel Kempton 31 before stumper Todd Saxelby struck 70, including five fours and four sixes, to help Frecheville post a total of 211-8.
Johnathan Scaife took 4-75.
Despite losing their first wicket with just six on the board, Gordon Laidlaw scored 36 to steady the ship for Sprotbrough.
Ben Lyons then guided matters to completion with an excellent 84 not out, made from 81 deliveries and including nine fours and four sixes.
Division Three (East) leaders Wombwell Main got back to winning ways by beating Maltby at Hough Lane.
Wombwell batted first with Daniel Harper scoring 40 and Matthew Tonks 32 in their total of 134.
Liam Woodward took 3-38 and Kevin Porter 3-23.
In Maltby’s response only Dave Clayden with 37 made any impact and they were bowled out for 104.
Tom Peck with 4-37 and Tonks with 4-13 did the damage with the ball.
Tickhill B easily beat Doncaster Town B at Alderson Drive to remain hard on the heels of the top two.
An excellent display of bowling by Dominic McGough (6-15) saw Doncaster reduced to 51 all out.
John Dickinson supported with 3-26.
Tickhill knocked off the required runs in 11.3 overs for the loss of four wickets.
Sheffield United B claimed their first victory of the season by beating fellow strugglers Upper Haugh B.