Ever since the dawn of online auction sites, collectors have been buying and selling baseball cards on eBay.

And, with the hobby boom of the 2020s, the ecommerce giant has become even more vital to moving cards from those who have them to those who want them.

On a typical day, thousands of new eBay listings are posted, offering up just about every kind of card you can imagine, and thousands of other lots change hands. But some cards — some listings — make a lot more noise than others, garnering loads of bids and collecting many other “watchers” as their sale progresses.

Keeping an eye on the trends among these “most watched” baseball cards on eBay can be a great way to keep up with the rapidly changing winds and sentiments in this hobby.

To help with that, we present below the hottest baseball cards on eBay right now as determined by the number of watchers.

And, if you like these sorts of hot-card listings, you might also enjoy some of the other up-to-date “most watched” lists we’ve put together:

Now, happy trend-watching!

(Note: The information below contains affiliate links to eBay baseball card listings)


1951 Bowman Mickey Mantle Rookie RC #253 Psa 3 Nice Centering Beautiful Card!

Watchers: 134  
# of Bids: 17
Current Bid: $10099
Auction Ends: 25-Oct-2021 02:10
See full listing on eBay (affiliate link)

MIKE TROUT 2021 TOPPS FIVE STAR 4-CLR JUMBO GAME USED PATCH ON CARD AUTO # /25

Watchers: 89  
# of Bids: 25
Current Bid: $1000
Auction Ends: 24-Oct-2021 03:10
See full listing on eBay (affiliate link)

2011 Topps Update MIKE TROUT Rookie Card #US175 RC Graded BGS 9.5 ANGELS! Huge!

Watchers: 82  
# of Bids: 20
Current Bid: $1175
Auction Ends: 24-Oct-2021 23:10
See full listing on eBay (affiliate link)

mickey mantle rookie card

Watchers: 78  
# of Bids: 63
Current Bid: $4226
Auction Ends: 24-Oct-2021 16:10
See full listing on eBay (affiliate link)

2018 Topps Update Series Ronald Acuna Jr. Gold SP 1794/2018 Rookie CARD #US250

Watchers: 74  
# of Bids: 25
Current Bid: $294
Auction Ends: 22-Oct-2021 22:10
See full listing on eBay (affiliate link)

BGS 9.5/10 GEM MINT Graded 2018 Topps Rookie Tek SHOHEI OHTANI Auto Card # 41/50

Watchers: 74  
# of Bids: 59
Current Bid: $1900
Auction Ends: 23-Oct-2021 01:10
See full listing on eBay (affiliate link)

1949 Bowman #50 Jackie Robinson ROOKIE CARD RC SGC 50 / SGC 4 VG/EX

Watchers: 70  
# of Bids: 59
Current Bid: $2375
Auction Ends: 26-Oct-2021 02:10
See full listing on eBay (affiliate link)

2019 Topps Chrome Refractor Fernando Tatis Jr Rookie Card #203 Padres

Watchers: 65  
# of Bids: 16
Current Bid: $86
Auction Ends: 25-Oct-2021 04:10
See full listing on eBay (affiliate link)

1989 Upper Deck Ken Griffey Jr. Rookie Card PSA 10 Gem Mint Slab * Invest * 🔥🔥

Watchers: 64  
# of Bids: 36
Current Bid: $2175
Auction Ends: 24-Oct-2021 02:10
See full listing on eBay (affiliate link)

1989 Upper Deck Ken Griffey Jr. Rookie Card PSA 10 Gem Mint Slab * Invest * 🔥🔥

Watchers: 64  
# of Bids: 28
Current Bid: $1975
Auction Ends: 27-Oct-2021 02:10
See full listing on eBay (affiliate link)

BGS 9.5 GEM MINT MIKE TROUT 2011 TOPPS UPDATE #US175 RC CARD ANGELS

Watchers: 64  
# of Bids: 39
Current Bid: $898.88
Auction Ends: 25-Oct-2021 02:10
See full listing on eBay (affiliate link)

2018 Bowman's Best JUAN SOTO #29 PSA 10 GEM MINT ATOMIC REFRACTOR RC ROOKIE CARD

Watchers: 63  
# of Bids: 17
Current Bid: $302.88
Auction Ends: 25-Oct-2021 01:10
See full listing on eBay (affiliate link)

2018 Bowman Chrome AUTO REFRACTOR Yordan Alvarez RC/1st Card, BGS 9.5/10! ASTROS

Watchers: 63  
# of Bids: 37
Current Bid: $550
Auction Ends: 23-Oct-2021 02:10
See full listing on eBay (affiliate link)

2018 Topps Heritage Shohei Ohtani RC on card Red Auto #19/69 HGA 9.0/10 Auto

Watchers: 62  
# of Bids: 17
Current Bid: $1275
Auction Ends: 24-Oct-2021 14:10
See full listing on eBay (affiliate link)

VLADIMIR GUERRERO JR RC 2019 TOPPS CHROME ROOKIE REFRACTOR ON CARD AUTO SP /499

Watchers: 60  
# of Bids: 14
Current Bid: $51
Auction Ends: 28-Oct-2021 02:10
See full listing on eBay (affiliate link)

1933 Goudey #53 Babe Ruth New York Yankees HOF PSA 2.5 Good+ " ICONIC CARD "

Watchers: 60  
# of Bids: 4
Current Bid: $11500
Auction Ends: 27-Oct-2021 14:10
See full listing on eBay (affiliate link)

1997-98 Upper Deck SP #M6 -- WAYNE GRETZKY -- Certified "On Card" Autograph Card

Watchers: 60  
# of Bids: 23
Current Bid: $246.5
Auction Ends: 27-Oct-2021 00:10
See full listing on eBay (affiliate link)

RYAN MOUNTCASTLE 2021 TOPPS FIVE STAR GOLD ON CARD AUTO 3-CLR GU PATCH # /10 RC

Watchers: 55  
# of Bids: 17
Current Bid: $145.5
Auction Ends: 24-Oct-2021 03:10
See full listing on eBay (affiliate link)

1954 Topps #128 Henry Hank Aaron Braves RC Rookie HOF SGC 1 " ICONIC CARD "

Watchers: 55  
# of Bids: 22
Current Bid: $465
Auction Ends: 28-Oct-2021 03:10
See full listing on eBay (affiliate link)

JOSE ALTUVE 2021 TOPPS FIVE STAR ON CARD AUTO INSCRIPTION CRUSH CITY /20 ASTROS

Watchers: 54  
# of Bids: 13
Current Bid: $44.02
Auction Ends: 24-Oct-2021 02:10
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2018 JARRED KELENIC BOWMAN CHROME DRAFT PICKS AUTO CARD NO:CDAJK PSA 10

Watchers: 54  
# of Bids: 21
Current Bid: $320
Auction Ends: 23-Oct-2021 16:10
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2001 Topps Traded Albert Pujols #T247 Rookie RC, Card Is PERFECT! Gem Mint

Watchers: 54  
# of Bids: 10
Current Bid: $63
Auction Ends: 25-Oct-2021 01:10
See full listing on eBay (affiliate link)

2021 TOPPS CHROME JUAN SOTO Beisbol Insert On-Card Auto Washington Nationals /99

Watchers: 53  
# of Bids: 14
Current Bid: $101
Auction Ends: 23-Oct-2021 03:10
See full listing on eBay (affiliate link)

2020 Bowmans Best Luis Robert REFRACTOR Rookie RC On Card AUTO!

Watchers: 53  
# of Bids: 12
Current Bid: $31
Auction Ends: 25-Oct-2021 00:10
See full listing on eBay (affiliate link)

PSA 9 Mint 2012 Topps Heritage MIKE TROUT Rookie Baseball Card #207 RC

Watchers: 53  
# of Bids: 21
Current Bid: $89
Auction Ends: 25-Oct-2021 01:10
See full listing on eBay (affiliate link)