Sean Keys has quickly become one of the Toronto Blue Jays’ best power-hitting prospects.

This is<a href="https://bluejaysnation.com/"> Blue Jays Nation’s</a> annual mid-season prospect list, where we’ll take a look at the 50 best prospects in the Toronto Blue Jays organization. I’ll look at the player’s stats, what other publications have to say, as well as my own observations of the players.
<div class="bam-inline-promotion" data-property-id="330" data-promotion-id="18983" data-context="“web-content-promocard&quot;"></div>
&nbsp;
There have been several breakout bats for the Blue Jays in 2025, <a href="http://bluejaysnation.com/2025/09/04/yohendrick-pinango-ranks-toronto-blue-jays-nations-11th-best-prospect-2025-mid-season-update">including our 11th-ranked prospect, Yohendrick Piñango</a>. However, Keys ranks as the 10th-best prospect in the organization thanks to his power.
<h2>Getting to know Sean Keys…</h2>
Position: Third base
Bats: Left
Born: May 26th, 2003
Acquired: Fourth round, 2024 MLB draft
Previous ranking: 26th (<a href="https://bluejaysnation.com/news/blue-jays-nations-2025-pre-season-prospect-countdown-no-26-sean-keys">2025 pre-season</a>)
<a href="https://bluejaysnation.com/news/blue-jays-selected-sean-keys-with-the-125th-overall-pick-in-the-2024-draft">The Blue Jays selected Keys in the fourth round of the 2024 draft</a> from Bucknell University. Standing at 6&#8217;2&#8243;, 225, the third baseman broke out in his junior season at the school, slashing .405/.535/.798 with 13 home runs in 213 plate appearances, with a higher BB% (164%) than K% (12.2%) to give him a 216 wRC+.
After the draft, Keys played out the rest of the 2024 season with the Single-A Dunedin Blue Jays, slashing .293/.378/.451 with a home run in 98 plate appearances for a 135 wRC+. So far in 2025, Keys has spent the entirety of the season with the High-A Vancouver Canadians.
He has been consistently good all year, slashing .213/.362/.394 with 18 home runs in 517 plate appearances, with a 22.1 K% and 16.3 BB%. He’s hovering around the 110 wRC+ mark, but since July 25th, he&#8217;s up around the 125 wRC+ mark with eight of his 19 home runs in a little over a month.
Those 19 home runs currently lead the Blue Jays’ organization, one ahead of RJ Schreck. In fact, his 19 home runs rank in the top 10 for all 2024 draftees in the 2025 season.
<a href="https://www.mlb.com/milb/prospects/bluejays/sean-keys-815873">Keys ranks as MLB Pipeline’s 27th-best prospect</a>, featuring a good approach at the plate with “easy power”. His hit tool is considered fringy by the site, but he’s given a 50 grade for power. He’s not a quick runner, and there’s a good chance he’ll move to first base, but there’s a lot to like about this bat if he can keep the power and also improve the contact like he had in college.
<hr />
Ryley Delaney is a Nation Network writer for <a href="https://bluejaysnation.com/author/ryley-delaney">Blue Jays Nation</a>, <a href="https://oilersnation.com/author/ryley-delaney">Oilersnation</a>, and <a href="https://flamesnation.ca/author/ryley-delaney">FlamesNation</a>. She can be followed on Twitter <a href="https://x.com/Ryley__Delaney">@Ryley__Delaney</a>.
<hr />
<div class="bam-inline-promotion" data-property-id="324" data-promotion-id="18983" data-context="web-content-promocard"></div>
&nbsp;

Sean Keys has quickly become one of the Toronto Blue Jays’ best power-hitting prospects.



This is<a href="https://bluejaysnation.com/"> Blue Jays Nation’s</a> annual mid-season prospect list, where we’ll take a look at the 50 best prospects in the Toronto Blue Jays organization. I’ll look at the player’s stats, what other publications have to say, as well as my own observations of the players.
<div class="bam-inline-promotion" data-property-id="330" data-promotion-id="18983" data-context="“web-content-promocard&quot;"></div>
&nbsp;

There have been several breakout bats for the Blue Jays in 2025, <a href="http://bluejaysnation.com/2025/09/04/yohendrick-pinango-ranks-toronto-blue-jays-nations-11th-best-prospect-2025-mid-season-update">including our 11th-ranked prospect, Yohendrick Piñango</a>. However, Keys ranks as the 10th-best prospect in the organization thanks to his power.
<h2>Getting to know Sean Keys…</h2>
Position: Third base

Bats: Left

Born: May 26th, 2003

Acquired: Fourth round, 2024 MLB draft

Previous ranking: 26th (<a href="https://bluejaysnation.com/news/blue-jays-nations-2025-pre-season-prospect-countdown-no-26-sean-keys">2025 pre-season</a>)

<a href="https://bluejaysnation.com/news/blue-jays-selected-sean-keys-with-the-125th-overall-pick-in-the-2024-draft">The Blue Jays selected Keys in the fourth round of the 2024 draft</a> from Bucknell University. Standing at 6'2", 225, the third baseman broke out in his junior season at the school, slashing .405/.535/.798 with 13 home runs in 213 plate appearances, with a higher BB% (164%) than K% (12.2%) to give him a 216 wRC+.

After the draft, Keys played out the rest of the 2024 season with the Single-A Dunedin Blue Jays, slashing .293/.378/.451 with a home run in 98 plate appearances for a 135 wRC+. So far in 2025, Keys has spent the entirety of the season with the High-A Vancouver Canadians.

He has been consistently good all year, slashing .213/.362/.394 with 18 home runs in 517 plate appearances, with a 22.1 K% and 16.3 BB%. He’s hovering around the 110 wRC+ mark, but since July 25th, he's up around the 125 wRC+ mark with eight of his 19 home runs in a little over a month.

Those 19 home runs currently lead the Blue Jays’ organization, one ahead of RJ Schreck. In fact, his 19 home runs rank in the top 10 for all 2024 draftees in the 2025 season.

<a href="https://www.mlb.com/milb/prospects/bluejays/sean-keys-815873">Keys ranks as MLB Pipeline’s 27th-best prospect</a>, featuring a good approach at the plate with “easy power”. His hit tool is considered fringy by the site, but he’s given a 50 grade for power. He’s not a quick runner, and there’s a good chance he’ll move to first base, but there’s a lot to like about this bat if he can keep the power and also improve the contact like he had in college.

<hr />

Ryley Delaney is a Nation Network writer for <a href="https://bluejaysnation.com/author/ryley-delaney">Blue Jays Nation</a>, <a href="https://oilersnation.com/author/ryley-delaney">Oilersnation</a>, and <a href="https://flamesnation.ca/author/ryley-delaney">FlamesNation</a>. She can be followed on Twitter <a href="https://x.com/Ryley__Delaney">@Ryley__Delaney</a>.

<hr />

<div class="bam-inline-promotion" data-property-id="324" data-promotion-id="18983" data-context="web-content-promocard"></div>
&nbsp;

Sean Keys ranks as Blue Jays Nation’s 10th-best prospect in 2025 mid-season update

Blue Jays: 3 key pitchers looking to turn things around for the September playoff push

Josh Kasevich, Edward Duran headline Blue Jays prospects attending 2025 Arizona Fall League

Houston Astros designated hitter Yordan Alvarez (44) hits a double against the Toronto Blue Jays during the fifth inning at Rogers Centre.

Recent articles from Ryley Delaney

Breaking News