A-1

Alastair Charles Ralphs (born May 22, 1977) is a Canadian professional wrestler and former bodybuilder, better known by his ring name A-1 (alternatively spelled A1 or A-One). He was born in Placentia Bay, Newfoundland, and relocated to Dunnville, Ontario at the age of five, later moving to Windsor, Ontario to attend the University of Windsor. Ralphs was trained by Scott D'Amore at the Can-Am Wrestling School and debuted in D'Amore's Border City Wrestling promotion in 2001.

After spending three years as an undercard talent, Ralphs adopted the A-1 persona, portraying a cocky, arrogant heel and forming an alliance with Johnny Swinger. He is best known for his appearances with Total Nonstop Action Wrestling (TNA) from 2004 to 2007 as part of Team Canada. On December 12, 2004, he defeated D'Lo Brown for the BCW Heavyweight Championship in Belleville, Michigan at "A Night of Appreciation for Sabu," and subsequently retained the title in a match against Abyss.