context: During the early part of Adrian Lewis career until 2007, he was Taylors Mentorship having practised together in their home city Stoke-on-Trent and made his television debut in 2004, aged 19, at the UK Open (darts). However, Lewis has kicked on since then and has amassed four PDC major titles including two consecutive World titles in 2011 and 2012. The pair have been part of what has been a feisty rivalry at times. For instance, in their semi-final meeting at the 2010 World Grand Prix Darts, Taylor accused Lewis of playing up to the crowd to put him off. Lewis would win that encounter five sets to four. Lewis and Taylor have met in four PDC major finals during their rivalry. These have included the finals of the 2008 and 2011 European Championship (darts) which Taylor won 11-5 and 11-8 respectively, the final of the 2013 2013 The Masters (darts) which Taylor won 10-1, as well as the final of the 2013 2013 World Matchplay (darts) where Taylor averaged 111.23 and won 18-13. The latter involved Lewis playing in his first Matchplay final where he averaged 105.92 and hit 19 maximums. Taylor and Lewis met in competition on at least 74 occasions, with Taylor winning 55 and Lewis winning 17, with 2 draws.
question: Who was Lewis's rival?
answer: Taylor