Giles ranked second in the league in walks behind San Francisco's Barry Bonds, who led with 198 in 2002. He also established the club record for most base on balls in a season by a left-handed batter. His .450 on-base percentage tied him for the second-best mark in the majors, he also ranked second in the league in slugging percentage with .622, sixth in home runs, second with 80 extra-base hits ranked second behind San Francisco's Jeff Kent, tied for second in the league with 13 outfield assists and also finished third in the N.L. with 24 intentional walks. He homered once every 13.1 at bats, the third-best ratio in the league behind Bonds' 8.8 and Sammy Sosa's 11.3.
Giles was sued by his former girlfriend for more than $10 million. She alleged Giles broke an oral and/or implied agreement that he would take care of her for an indefinite period of time. She alleged Giles began abusing her in 2002, and battered her while she was pregnant with Giles' child, and caused her to have a miscarriage. She dropped the allegations that Giles caused the miscarriage before the trial began. A jury found that both Giles and his girlfriend, Cheri Olvera, committed acts of domestic violence against each other but that there were no damages. The jury also refused to award damages on Olvera's contract claim, finding that Olvera's alleged terms were not clear enough so that both Olvera and Giles could understand what each was required to do. Instead, the jury found that Olvera must return the $107,000 engagement ring Giles provided to her or pay the $107,000 as damages. Following Giles' dispute with Olvera and given the nature of the court case, Giles' endorsement contract with Nair Hair Removal products was terminated.