Andy Murray beat Greg Rusedski in the final singles match to seal victory for Scotland in the inaugural Aberdeen Cup.
Murray (right) took advantage of Rusedski's calf injury
The England v Scotland team competition finished 4½-2½ as the 18-year-old Scot avenged his loss the previous day to Rusedski with a 4-6 6-4 10-1 win.
Another tight match showed Murray, who has surged up the rankings this year, is closing the gap on the British No 2.
But Rusedski, 32, was hampered by a calf injury, with Murray racing through their tie-break decider.
Murray admitted afterwards: "I didn't think I was going to win, Greg was serving great.
"He's a great player and everyone here should give him a hand. It's great to get a player like Greg, who has been to number four in the world and to a final of a Grand Slam."
Rusedski praised Murray's ruthlessness when his injury began to hamper his mobility.
"That's a good sign - we want to see players showing no mercy," he said.
Rusedski added he would still be gunning for Tim Henman's British number one spot in 2005.
"And now it's a three-man competition with Andy, Tim Henman and myself. It's going to be interesting next year."
Earlier, Murray had tasted success against his Davis Cup team-mate by taking a 6-3 2-6 10-5 doubles victory with his brother Jamie.
They teamed up to beat Rusedski and David Sherwood to bring Scotland level by winning a first-to-10 champions tiebreak after each pair took a set.
England levelled thanks to the half-point earned by Oliver Golding, 12, with his 11-4 champions tiebreak win over Scott Lister in the junior rubber.
But the hosts then went ahead when Jamie Murray and Elena Baltacha beat Sherwood and Katie O'Brien 7-5 6-3.