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San Francisco Giants rookie cards: the key rookie card of every player we cover

The San Francisco Giants player collectors look up most is Marcelo Mayer, whose key rookie card is the 2025 Topps Update Series #US105. Below, the key rookie card of each of the 4 San Francisco Giants players with a sourced card page, then the club's rookies and second-year players, all by collector interest.

Attention measures how much people are looking up this player, a leading indicator collectors watch. It is not a price. Source: Wikipedia pageviews through 2026-10-15.

San Francisco Giants key rookie cards

By our printed criteria, from each player's cited checklist.

  1. 1

    Marcelo MayerSF 2B

    Key RC: 2025 Topps Update Series #US105

    9,667 lookups in 30 daysdown 66% this weekCooling

  2. 2

    Rafael DeversSF 1B

    Key RC: 2018 Topps #18

    5,282 lookups in 30 daysdown 19% this weekCooling

  3. 3

    Drew GilbertSF OF

    Key RC: 2026 Topps Series 1 #155

    3,422 lookups in 30 days

  4. 4

    Bryce EldridgeSF 1B

    Key RC: 2026 Topps Series 2 #406

    3,395 lookups in 30 daysup 10% this weekFlat

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San Francisco Giants rookies and second-year players

Ranked by lookups in the last 30 days.

  1. 1

    Matt WilkinsonSF SP

    4,153 lookups in 30 daysup 155% this weekSurging

  2. 2

    Jonah CoxSF OF

    3,225 lookups in 30 days

  3. 3

    Blade TidwellSF SP

    1,845 lookups in 30 days

  4. 4

    Christian KossSF SS

    1,578 lookups in 30 days

  5. 5

    Turner HillSF OF

    1,388 lookups in 30 days

  6. 6

    Victor BericotoSF OF

    1,053 lookups in 30 days

  7. 7

    Trent HarrisSF RP

    923 lookups in 30 days

  8. 8

    Cesar PerdomoSF SP

    777 lookups in 30 days

  9. 9

    Drew CavanaughSF C

    776 lookups in 30 days

  10. 10

    Carson SeymourSF RP

    775 lookups in 30 days

  11. 11

    Daniel SusacSF C

    771 lookups in 30 days

  12. 12

    Dylan SmithSF RP

    605 lookups in 30 days

  13. 13

    Carson WhisenhuntSF SP

    417 lookups in 30 days

  14. 14

    Joel PegueroSF RP

    149 lookups in 30 days

  15. 15

    Yunior MarteSF SP

How this list is ranked

Collector interest is how many people looked each player up on Wikipedia: the last 30 days for the ranking, the last 7 against the 7 before for the weekly change. It measures attention, not what any card sells for, and Parlae prints no card values. A key rookie card is picked by the criteria printed on each player's card page, from his sourced checklist.

By the Parlae deskCard lists updated Oct 16, 2026 at 12:22 PM ETHow this is builtReport a wrong number