The unbeaten side face both Surrey Storm and Hertfordshire Mavericks in the space of three days.
Storm are really hitting their rhythm, beating Mavericks in the record-breaking London Live match at the Copperbox in Olympic Park last time out and offer up the toughest test.
A number of Surrey play will cause Thunder problems, with player-coach Tamsin Greenway close to her imperious best and England captain Pamela Cookey takes a step closer to regaining her pre-injury form every time she takes to the court.
Thunder mid-courter Beth Cobden said: “It’s going to be a big weekend. We never really do too well against Surrey away so it will be a big challenge.”
The contrasting fixture in 2014 was an end-to end thriller, finishing in a tie. But due to a Superleague rule-change, draws are no longer possible and teams must play extra time (and penalty shots if needs be)to grind out a result.
The new rule hasn’t come into play so far this season but these two are so closely matched, it is a distinct possibility on Saturday.
A win for Thunder would put them firmly in the driving seat to reach a second successive grand final but a victory for Surrey could swing the season wide open again.
Thunder will then face Hertfordshire Mavericks on Monday, themselves facing a battle to secure a semi-final place.
Report by Denise Evans