Related Clues:

• Toss in a chip, say
• Pay to play 19 Across
• Start for date?
• Chamber starter
• Exacta or quinella
• Front money
• You might get a hand for it
• Poker-game starter
• Gin-game pot
• Pot part
• Deal prelude, often
• It may elicit a call
• Hold-'em ritual
• Commitment to the game
• It could precede a good deal