Joining Jervis on the shortlist included Everard Bartlett, Greg Hire and Ben Purser. After missing out on the spot to childhood-friend Hire, Jervis was overlooked for a roster spot by the Cairns Taipans after going on tour with them in China. In June 2013, Jervis started a new career selling radiators to mine sites. Just two months later, on 12 August 2013, he put that career on hold after he signed a one-year contract with the Perth Wildcats. Despite the strength in depth of the Wildcats roster, Jervis forced his way into the rotation, beginning the 2013–14 season as the starting centre with Matt Knight out injured. On 24 January 2014, he scored a season-best 21 points in an 83–80 loss to the Melbourne Tigers. Jervis helped the Wildcats go 21–7 in the regular season before going on to reach the 2014 NBL Grand Final series, where they won the championship with a 2–1 defeat over the Adelaide 36ers. He subsequently earned NBL Rookie of the Year honours. Jervis appeared in all 33 games, averaging 5.1 points, 4.8 rebounds, 1.2 assists and 1.2 blocks per game. After winning a championship with the Wildcats, Jervis re-joined the East Perth Eagles and helped them win their maiden SBL Championship in August 2014. In the grand final, Jervis led the way for East Perth with 22 points, 19 rebounds, three assists and three blocked shots. After toying with free agency and meeting with Melbourne United, Jervis decided to re-sign with the Wildcats for another two seasons in June 2014. He attracted plenty of attention from rival clubs and was tempted by lucrative offers. On 31 December 2014, Jervis had a season-best performance in his 50th NBL game, recording his first double-double of the season with 10 points and 10 rebounds in an 86–77 win over the Wollongong Hawks. On 9 January 2015, he scored a season-high 17 points in a 91–76 loss to the Cairns Taipans. On 23 January, he recorded his second career double-double with 12 points and 11 rebounds in a 93–85 overtime win over the Townsville Crocodiles. The Wildcats finished the 2014–15 season in fourth place with a 16–12 record, and lost 2–0 to the Taipans in the semi-finals. Jervis appeared in all 30 games, averaging 7.1 points, 4.9 rebounds and 1.0 blocks per game.