Number Battle
Every card is a ballpark legend. The catch? Each legend is his retired number. Decode the man, multiply the numbers, take the pile.
Get the printable deckThe Skill Yard
Six ways to train, one lineup of legends. Pick a drill — the cards stay the same, the challenge changes. Every round is 60 seconds; rank climbs as you do.
The number is on his back.
Your brain reads the pinstripes.
Every card is a the club legend, and every legend is his retired jersey number — Ruth is 3, Mantle is 7, Maris is 9. Kids recall the number, then multiply or add. Baseball history and math fluency, on the same card.
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1
Read the legend
See Mickey Mantle. Think 7. The face is the clue; his retired number is the value hiding underneath.
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2
Battle the numbers
Two cards flip. Multiply them — 7 × 3 — and the first to shout 21 takes both cards.
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3
Win the pile
Win rounds, take cards. Most cards wins the series. Switch to sums of ten any time for younger players.
Love the game? Bring the real deck home.
Thirteen collectible-style cards — nine numbered legends plus four wild-card stars — with four skill-level decks, a 150-problem practice workbook, full answer keys, and a Certificate of Completion. Instant PDF, ready to print.
Nine legends. Nine retired numbers.
Legends Derby hides each value behind a pinstripe icon whose number was retired by the club. Learn the roster once and you read the whole deck on sight.
For my son Jordan. You never once gave less than everything you had on that field — not when it was easy, and not when it was hard. You played every inning like it mattered, because to you it did. That same heart is what you carry into everything now, and watching you meet each new challenge head-on, still hungry, still competing, still finding the joy in it, is the proudest thing I know. This deck is yours. — Dad
WILD Cards
The legends behind the numbers.
Each disguise is a real ballplayer whose number is part of the game’s history. Tap a number to read why that legend wears it — the reason the face and the value belong together.
1Billy Martin
The fiery second baseman and five-time manager wore No. 1, retired by the club in his honor. Martin played on the great 1950s championship teams and later managed the Bronx to the 1977 World Series title — a scrappy competitor whose number now stands alone.
2Derek Jeter
“The Captain” spent his entire career in pinstripes wearing No. 2, the last single digit his club had left to give. Five championships, over 3,000 hits, and a Hall of Fame induction later, No. 2 was retired and lifted to Monument Park.
3Babe Ruth
The Sultan of Swat wore No. 3, batting third in the lineup. Ruth’s towering home runs transformed baseball and filled the ballpark that his bat paid for. His was among the first numbers the the club ever retired.
4Lou Gehrig
The Iron Horse hit cleanup and wore No. 4. Gehrig’s record streak of consecutive games and his grace in the face of illness made him a legend; in 1939 he became the first player in MLB history to have his number retired.
5Joe DiMaggio
The ballpark Clipper wore No. 5 and set the standard for elegance in center field. His 56-game hitting streak in 1941 still stands as one of baseball’s most untouchable records, and his number hangs retired in the Bronx.
6Joe Torre
A solid player turned championship skipper, Torre wore No. 6 while managing his club to four championship titles in five years. The club retired the number to honor the architect of a modern dynasty.
7Mickey Mantle
The Mick wore No. 7 and was the most feared switch-hitter the game has known — a Triple Crown winner whose blasts from both sides of the plate defined an era. No. 7 is one of the the club’ most beloved retired numbers.
8Yogi Berra
The catcher and quotable philosopher wore No. 8, anchoring a record run of championships behind the plate. A three-time MVP, Berra’s number was retired alongside fellow ballpark catcher Bill Dickey.
9Roger Maris
Wearing No. 9, Maris chased history in 1961, belting 61 home runs to break Babe Ruth’s single-season record. Back-to-back MVP seasons cemented his place, and the the club retired his number in tribute.
99Aaron Judge
The the club’ captain and record-setting slugger wears No. 99. In 2022 he launched 62 home runs to break the American League single-season record, earning unanimous MVP honors.
45Gerrit Cole
The ace right-hander wears No. 45. A Cy Young Award winner and strikeout artist, Cole anchors the top of his club’s rotation as one of the most dominant starters in the game.
11Anthony Volpe
A homegrown shortstop who grew up rooting for the club, Volpe wears No. 11. He won a Gold Glove as a rookie and represents the next generation of pinstripe talent.
54Max Fried
The crafty left-hander wears No. 54. An All-Star with pinpoint command and one of the best curveballs in baseball, Fried joined New York to strengthen the rotation.
Print the deck.
Start the series.
One download: the full Legends Derby deck of numbered legends plus wild cards, sized for cardstock, with rules for both ways to play. Cut, deal, and battle for math fluency — no screens required.
Number Battle
Flip two legends, first to shout the product wins the pile. Pure multiplication fluency under pressure.
Sum of 10 Showdown
Hunt for legends whose numbers add to ten. Fast number sense for the youngest players.
Teachers & parents put it to work as a…
- Math center
- Early-finisher activity
- Family game night
- Class tournament
- Schoolwide fundraiser
- Cross-subject review
Legends Derby is an independent educational product. It is not affiliated with, associated with, authorized by, endorsed by, or in any way officially connected to Major League Baseball, the New York Yankees, the MLB Players Association, or any of their clubs, subsidiaries, or affiliates. All player names are used for identification and educational purposes only; all trademarks belong to their respective owners.
Instant PDF · 13 cards + four level-decks, a 150-problem workbook, answer keys & a certificate · Ages 7+ · Grades 3–9 · Not affiliated with the New York the club.