The runaway leaders took the lead just four minutes in when Josh Hancock fired home from close range, but they were pegged back by the Tigers shortly after the half-hour mark through Jay Rollins.
The draw saw Radcliffe move 11 points clear, with Marine - their nearest challengers heading into the weekend - not in action.
Elsewhere in the fight for promotion, a late goal from Ben Hough was enough to see Warrington Rylands secure all three points with a narrow win at home to Matlock Town.
Hyde United also remain in the play-off spots despite a goalless draw at Basford United.
Another of the sides vying for a top-five position, Guiseley sit two points adrift after being pegged back by Ashton United in a 1-1 draw at Hurst Cross.
The highest scoring game of the afternoon came at Ilkeston Town, whose five-game unbeaten run came to an end at the hands of Lancaster City.
David Norris and Charlie Bailey (2) scored for the Dolly Blues as they rose to eighth in the table.
Meanwhile, Bamber Bridge came from behind to claim a 3-1 victory at Morpeth Town, who took just two minutes to hit the fron the front through Vinnie Steels.
The two teams are now locked on 35 points in the league table, four behind Whitby Town.
In the day's other games, Declan Howe's 51st minute effort was enough to see Gainsborough Trinity pick up a 1-0 win at Atherton Collieries.
That defeat leaves Colls six points from safety and now below another of their relegation rivals in Bradford Park Avenue.
Avenue picked up a priceless three points in their fight for survival as goals in either half from Jordan Preston and Edy Maieco helped them past Workington.
The only other scheduled game of the day fell foul of the conditions as Whitby Town's home game against FC United of Manchester was postponed due to a waterlogged pitch.
Results - Saturday 10 February
Ashton United 1-1 Guiseley
Atherton Collieries 0-1 Gainsborough Trinity
Basford United 0-0 Hyde United
Ilkeston Town 2-3 Lancaster City
Morpeth Town 1-3 Bamber Bridge
Warrington Rylands 1-0 Matlock Town
Whitby Town P-P FC United of Manchester
Workington 0-2 Bradford Park Avenue
Worksop Town 1-1 Radcliffe
Click here for the latest results from the NPL East Division, NPL Midlands Division and NPL West Division.
Photo credit: Michael Porter