Half centuries from Dan Blacktopp (83) and captain Jamie Hewitt (64) plus the bowling exploits of Owais Shah (4-27) proved crucial as Welwyn Garden City CC beat Radlett by 131 runs to be crowned SHCL Premier Division Play-off winners.
Jamie Hewitt is looking to end his Welwyn Garden City career as he began it back in 2007 – by winning the league title.
Skipper James Scott struck his third century of the season as Potters Bar secured their Premier League status with a win over basement club Botany Bay.
Welwyn Garden City secured enough points to ensure a play-off place, while North Mymms avoided relegation after their derby clash on Saturday.
A second thrilling game in two weekends, saw Welwyn Garden City claim another victory, this time beating Sawbridgeworth by just one run.
With five games left of the SHCL Premier Division season, Potters Bar have a fight for survival on their hands.
Welwyn Garden City downed league leaders Radlett by three wickets with the final ball at Digswell Park on Saturday.
Nesan Jeyaratnam made 113 not out as North Mymms drew with Botany Bay at Home Farm on Saturday.
Hatfield & Crusaders, missing several first-team regulars through injury, slipped to a disappointing 36-run defeat against Preston 2nds on Saturday.
North Mymms travelled to bottom side Sawbridgworth on Saturday and claimed a second win of the season to boost their survival hopes.
Welwyn Garden City and Potters Bar shared the spoils in a run fest on a scorching day at The Walk on Saturday.
A depleted Hatfield & Crusaders secured a thrilling 23-run win over Hitchin 2nds with Mukesh Kumar taking 7-45.
Steve Snell hit a monster 128 for North Mymms in a winning home draw against runaway league leaders Radlett on Saturday.
England one day international captain Eoin Morgan was an interested onlooker at Digswell Park on Saturday as Welwyn Garden City defeated Totteridge Millhillians by four wickets.
Welwyn Garden City
Letchworth Garden City