In the year 2000, which team has played the most games against the Buffalo Sabres?
which team played the most games against refers to oppID where MAX(SUM(G); Buffalo Sabres is the name of team;
SELECT T3.name FROM TeamVsTeam AS T1 INNER JOIN Teams AS T2 ON T1.year = T2.year AND T1.oppID = T2.tmID INNER JOIN Teams AS T3 ON T1.year = T3.year AND T1.tmID = T3.tmID WHERE T1.year = 2000 AND T2.name = 'Buffalo Sabres' GROUP BY T3.name ORDER BY SUM(T2.G) DESC LIMIT 1