25NL flopped 2pr

PokerStars No-Limit Hold'em, $0.25 BB (7 handed) Poker-Stars Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

MP1 ($4.75)
Hero ($32.05)
CO ($9.40)
Button ($30.80)
SB ($43.80)
BB ($32.30)
UTG ($2.50)

Preflop: Hero is MP2 with A, T.
1 fold, MP1 calls $0.25, Hero raises to $1, 1 fold, Button calls $1, 1 fold, BB calls $0.75, MP1 folds.

Flop: ($3.35) A, T, 6 (3 players)
BB bets $1.75, Hero raises to $6, Button folds, BB calls $4.25.

Turn: ($15.35) 3 (2 players)
BB bets $25.3 (All-In), Hero calls $25.05 (All-In).

River: ($65.45) 4 (2 players, 2 all-in)

Final Pot: $65.45

Villain is 19/0 over only 50 hands

I play every street the same (apart from raising to 5bb preflop), this could easily be a worse 2pr or a draw - you're only really behind to TT/66, and I think a set would often check the turn to you since you're very likely to bet it.

Having said that, I'm not sure a 19/0 is going to play KsQs like this and might fold A6s preflop... but 50 hands isn't much of a sample.