you were right to believe you were probably ahead...but its best to be careful, he could have had anything...eg:
PokerStars No-Limit Hold'em Tourney, Big Blind is t20 (7 handed)
converter
MP2 (t2530)
CO (t2920)
Button (t1420)
SB (t1510)
BB (t500)
UTG (t2470)
Hero (t2150)
Preflop: Hero is MP1 with

,

.
1 fold,
Hero raises to t60, MP2 calls t60,
3 folds, BB calls t40.
Flop: (t190)

,

,
(3 players)
BB checks,
Hero bets t100, MP2 calls t100, BB calls t100.
Turn: (t490)
(3 players)
BB checks,
Hero bets t240, MP2 calls t240, BB folds.
River: (t970)
(2 players)
Hero bets t420,
MP2 raises to t840, Hero calls t420.
Final Pot: t2650
Results in white below:
Hero has Kd Ks (full house, fives full of kings).
MP2 has 5c 8s (four of a kind, fives).
Outcome: MP2 wins t2650.