If a card in your hand fits your own table meld, put it there before you draw. It's a free way to shed a card and shrink your deadwood without touching the discard pile.
Every card in your hand at the end of a round counts against you. Burning a card means getting it out of your hand safely. There are three normal ways to burn. Discard it (may help opponents). Extend an opponent's meld (safe but rare). Extend your own meld (safest of all).
Extending your own meld is the cleanest. You already have the meld on the table. Adding one card to it uses no turn. Costs no risk. Shrinks your deadwood by that card's value.
This tip says, before you take a new card from the stock, check if any card in your hand extends your own melds. If yes, extend first, then draw. The extension is free.
On Play Rummy, extensions to your own melds happen with one drag. There's no cost to fitting them in before your draw.
Say you melded 5♠-6♠-7♠ on turn six. On turn ten, you draw a fresh card and now hold the 8♠ in your hand. The 8♠ fits your run.
Option one, hold the 8♠ and hope to use it in a bigger meld later. If the round ends before you place it, it costs you eight points.
Option two, extend your own run to 5♠-6♠-7♠-8♠. The 8♠ leaves your hand instantly. Zero cost.
The extension is almost always the right call. The exception is very rare and we'll cover it in a moment.
Do this at the start of every turn, before you draw.
Step one, list your table melds. Runs by suit and end ranks. Sets by rank.
Step two, scan your hand for extending cards. For each run, the adjacent rank in that suit. For each set, the missing suit of that rank.
Step three, extend before drawing. Drop the extending card onto the meld. Then draw as normal.
Simple. If yes, extend. If no, move on.
There's one case where you should not extend right away. When the same card could be used in a new meld you're close to completing in your hand.
Example. Your table run is 5♠-6♠-7♠. Your hand has 8♠, 8♥, and 8♦. The 8♠ can extend the run. Or it can be part of a new set of eights.
If you extend the run, the set is gone. If you keep the 8♠ and complete the set of eights, you have two melds instead of one longer run. That's usually more valuable.
The rule is, extend when the card has no other use in hand. If it has another use, weigh both and pick the bigger meld.
Extending your own meld isn't just about points. It also changes the tempo.
When you extend, opponents see your meld grow. They read that as, this player is close to finishing. That reads triggers defensive tightening. They discard more carefully. They stop taking from the pile.
The pressure is on your side. An opponent who was going to declare next turn may now hesitate. That hesitation gives you one more turn to close.
Extension is a free move. It costs no turn. It sends a strong signal. Experts use this deliberately.
Some Rummy variants let you extend multiple cards onto your own melds in a single turn. Play Rummy usually allows this.
If you have three cards that all fit your table melds, drop them all before your draw. Three-cards-burned is a huge shift in one turn.
This is common late in the round. As your hand shrinks and the meld shape becomes clear, more cards fit. Take advantage of the multi-extension by planning the order. Extend highest-value cards first if the round might end unexpectedly.
Experts think about extensions when they meld, not just after.
If you have 5♠-6♠-7♠-8♠ in hand and you meld the run, you might meld all four. But sometimes it's smarter to meld 5♠-6♠-7♠ and keep the 8♠ in hand. Why? Because you might draw the 9♠ next turn. Now you have 8♠-9♠ and can extend twice more onto the same run.
The trade-off. Keeping the 8♠ costs eight points if the round ends before you extend. If the round is long, keeping it is fine. If the round is short, meld it all.
Reading round pace helps you decide. Fast round with aggressive opponents, meld it all. Slow round, keep the 8♠ and hunt for the 9♠.
Extension is a two-way street. Any player can extend any meld. So sometimes opponents extend yours.
If an opponent extends your run with a card of their own, it doesn't hurt you point-wise. But it does mean the opponent shed a card safely. That's a small loss for you.
The best defense is to extend your own melds proactively before opponents can. If you place the 8♠ on your run, an opponent's 8♠ can't be placed there (it's a set of two eights now, but the run adjacency is closed at that end).
Actually, in most variants, an opponent's 8♠ can still extend if the run doesn't include it. Once you extend to 8♠, the adjacency shifts to 9♠. Read your variant's rules on multiple extensions. In Play Rummy, extending a run pushes the adjacent card outward, so pre-emptive extension does help.
Forgetting the check before drawing. Players rush to draw and skip the extension. Fix, always look at your hand vs your table melds first.
Extending too eagerly and killing a bigger meld. Extending the 8♠ onto your run kills the possibility of a set of eights. If the set is realistic, hold. Fix, weigh both options for two seconds before extending.
Extending a low card and keeping a high one. If you have a 4♠ and an 8♠ both extending your run at different ends, prefer to extend the higher value card if you're worried about round end. Points-wise, dumping the 8♠ saves more.
Not extending late round. Late round, every card that fits any meld should go. Some players hold because "the round isn't over yet." Fix, if the stock is under six, extend everything you can.
In your next five games, before every draw, name every table meld you have and check every card in your hand for extension potential.
You'll probably find one or two extension opportunities per round that you'd have missed on autopilot. Each missed extension is points saved.
After a few sessions, the check becomes automatic. Every draw begins with the scan.
Your own table melds are a permanent dump zone. Any card that fits them can leave your hand for free. Don't leave that free savings on the floor.
Extend before drawing. Extend as many times as the meld allows. Save the extensions for the set only when the set is really coming.
Free points saved is the same as points earned.