The first round of Prelims of the 2015 ASA National Age Group Water Polo Championships saw Sedgefield and Exeter lead the way in Walsall.
Competing in the Boys U17 competition, last year's U15 champions Sedgefield secured four wins and one defeat to finish top of Group A on Saturday.
Exeter went impressively unbeaten to win Group B on Sunday with five wins from five and will join Sedgefield in the next round.
City of Manchester and Invicta finished second and third in Group A to book their places in the Qualification round while Solihull and Watford also went through from Group B.
Click here to find out more on the ASA's NAG Water Polo Hub.