In 1975 he joined Port Adelaide and went on to play 248 games for the club. Initially used in defense, he was moved to full forward in 1977 by coach John Cahill and was an immediate success leading the league with 87 goals, including 7 in the 1977 SANFL Grand Final win over Glenelg. He repeated the performance in 1978 kicking 90 for the season.
Evans first kicked over 100 goals in 1980 when he kicked a then SANFL record 146 goals, and would win the leagues inaugural Ken Farmer Medal in 1981 kicking 98 for the season. Evans went on to kick 1,044 goals before his retirement at the end of the 1986 season, the second highest total in SANFL history behind North Adelaide's Ken Farmer who kicked 1,419 between 1929 and 1941. He also kicked 25 goals in seven games for South Australia in interstate football.
Tim Evans played Port Adelaide's 1977, 1979-81 premiership teams as well as playing full back in the losing 1976 Grand Final to Sturt in front of the SANFL record crowd of 66,897 at Football Park.
Evans topped the SANFL's goalkicking six times and was Port's leading goalkicker ten times. He was an inaugural inductee into the South Australian Football Hall of Fame in 2002 and was inducted into the Tasmanian Football Hall of Fame in 2008. Tim Evans is also a Port Adelaide Life Member, an SANFL player Life Member (for having played 200 games) and was selected at full forward in Port Adelaide's Greatest Team of players from 1870-2000.