How many teams did the team with the most victories in 1915 play against?
Indicate the name of the team who won the most games in 1915, as well as the names of the opposing team.
team playing refers to tmID; oppositng team refers to oppID; victories' and 'wins' are synonyms; most victories refers to max(w)
SELECT COUNT(DISTINCT oppID), T2.tmID, T2.oppID FROM Teams AS T1 INNER JOIN TeamVsTeam AS T2 ON T1.year = T2.year AND T1.tmID = T2.tmID WHERE T2.year = 1915 GROUP BY T2.tmID, T2.oppID ORDER BY SUM(T2.W) DESC LIMIT 1