These performances were enough to get him noticed by British League clubs and he signed for the Scottish Monarchs for the 1996 season.
[3] The highlight of Alfonso's career came during the 1996 season when he competed in the 1996 Italian Grand Prix, a meeting where he defeated the eventual 1996 World Champion, Billy Hamill.
[4] Alfonso didn't return to the UK in 1997 after being banned from racing due to failing a drugs test at the Italian Championships in 1996.
His failure to complete the necessary 6 matches to gain a new league average saw him excluded from the 1999 team and he never raced in UK speedway again.
He continued to compete on the Continent, including racing in the Italian League in 2002, before a broken leg ended his career.