JQ suited flop check, river jam caught by full house, was this hand a mistake?

A player in a 1/3 no-limit hold'em cash game, holding JQ suited, raised on the button. Flopped a flush draw and checked. Turned top pair, rivered trips. Facing a large bet, the player jammed, only to be snap-called by opponent's 77 full house. This article reviews the key decision errors in the hand.
Hand Background
$1/$3 No-Limit Hold'em, max buy-in $300. Effective stacks ~$450, opponent covers with $700. Hero is on the button holding J♣Q♣.
Action
- Preflop: UTG and MP limp, hero raises to $20. SB and BB call, UTG re-raises to $50, hero calls, SB and BB fold.
- Flop: A♠7♣4♣. UTG checks, hero checks behind.
- Turn: J♦. UTG bets $75, hero calls.
- River: J♥. UTG bets $250 (near pot-sized), hero has only $325 behind and shoves all-in. UTG snap-calls, shows 77 for a full house (7-7-7-J-J).
Analysis
Preflop
Hero's raise on the button with JQ suited is standard. However, facing UTG's 3bet, JQ suited should usually fold. Although in position, UTG's 3bet range is strong, and JQ is easily dominated. Calling is a marginal but acceptable mistake.
Flop
Flop A♠7♣4♣, hero has the nut flush draw. After opponent checks, hero also checks. Betting here might be better to pressure weak parts of villain's range and build the pot. Checking also has merit – controlling pot size and balancing range. In practice, checking often leads to a lack of information.
Turn
Turn J♦ gives hero top pair while still holding the flush draw. Opponent bets $75 (about 2/3 pot), hero calls. The call is reasonable, but hero should consider opponent's range.
River
River J♥ gives hero trips (three Jacks), but also improves all hands containing a J (AJ, KJ, QJ, JT, J9, etc.) significantly. Opponent bets $250, close to pot. With $325 behind, hero shoves all-in.
Key mistake: Hero's shove is a value bet that only gets called by worse trips, while better hands (such as any A with AK/AQ, and any full house) snap-call. Hero should consider: opponent 3bet preflop and then bet three streets – his range includes AAA, KKK, QQQ, AK, AQ, as well as 77. 77 flopped a set and made a full house on the river. When hero shoves, opponent only wins. A better play would be to call and showdown, or consider folding.
Final Assessment
The main error in this hand is the river shove. Hero mistook trips for a strong hand, but it's actually a weak value bet – hands that call are mostly better. The flop check was also a minor mistake, possibly leading to missing information. Overall, hero likely overestimated the strength of JQ and underestimated opponent's range.
Summary
In poker, trips are not always the nuts. When facing a large bet, careful evaluation of opponent's range is necessary. This hand is a classic lesson: when your value bet is dominated by opponent's range, check-calling or folding is safer.