Berkshire 209 (Richard Morris 64; Tomos Jones 6-46) & 345-5dec (Archie Carter 126, James Morris 86, Michael Williams 57), Wales 200 (Umer Malik 61, Chris Peploe 6-66) & 134 (Peploe 7-14).
Berkshire (21 pts) beat Wales (5 pts) by 220 runs.
Berkshire completed a comprehensive 220-run victory over Wales Minor Counties to make it two Unicorns Championship wins on the bounce this season.
Only nine runs separated the sides in the first innings - Berkshire 209, Wales 200 - but it was a very different story the second time around.
The reigning champions posted 345-5dec in 83.4 overs with 18-year-old Archie Carter leading the way with an impressive 126 and skipper James Morris making a well-struck 80 off 93 deliveries.
Carter was partnered at the top of the order by debutant Michael Williams, also 18, and they are the youngest opening pair ever fielded in Berkshire's long history. Williams failed to get off the mark on Sunday but showed his undoubted ability in the second innings with a fine 57 off 65 balls.
Williams has just left The Oratory and it was one of his school's sports coaches, Chris Peploe, who took the bowling honours by some distance.
The left-arm spinner claimed 6-66 at his first go at the Wales batsmen and followed up with a remarkable 7-14 on the final day to finish with 51.5-16-80-13, the best match haul of his career.
The visitors had been set an improbable 355 to win in approximately 98 overs and made a promising start with 45 runs in the opening six overs. However, Peploe, in particular, and Euan Woods (2-29) started to make inroads in devastating fashion, sending Wales crashing from 90-4 to 90-8, with four wickets falling in seven balls.
The ninth wicket went down at 100 before 34 runs came for the last wicket with Majied IIyas remaining unbeaten on 29 from 65 balls when the innings ended at 134 in the 50th over.
After two games, Berkshire top the Western Division table with 45 points, 11 more than Wiltshire in second place.
Their next game is against Cheshire at Finchampstead CC on July 21-23.
Picture: Chris Peploe leads Berkshire off the field at the end of the game