Table:
text: 2008–09 Wellington Phoenix season
Home attendance
Home attendance
Date_ Round Attendance Opposition Stadium
4 January 2009 Round 18 7520 Newcastle Jets Westpac Stadium
18 January 2009 Round 20 8241 Adelaide United Westpac Stadium
Total 79122 79122 79122 79122
Average 7193 7193 7193 7193

Question: Which stadium had the opposition of 79,122 in Wellington Phoenix for the 2008-09 season?