Delta Dental Park at Hadlock Field

Double-A
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Delta Dental Park at Hadlock Field is a ballpark in Portland, Maine, home of the Portland Sea Dogs, the Double-A affiliate of the Boston Red Sox in the Eastern League. It opened in 1994, making it 32 years old in 2026 and seats about 7,368 fans. 37-ft 'Maine Monster' replica of Fenway's Green Monster in left.

The closest MLB stadium is Fenway Park in Boston, about 99 miles away.

Ballpark facts

Location
Portland, Maine
Home of
Portland Sea Dogs (Double-A)
League
Eastern League
MLB affiliate
Boston Red Sox
Opened
1994
Capacity
7,368
Dimensions
Left field 315 ft · Center 400 ft · Right field 330 ft
Outfield wall
37 ft
Surface
Natural grass
Roof
Open air
2026 attendance
5,574 per game
Named for
Edson B. Hadlock Jr.
Former names
Hadlock Field
Architect
William E. Whited Inc.

Ballparks near Delta Dental Park at Hadlock Field10

  1. 1D-IIIEd Flaherty Field — Southern Maine Huskies (Gorham, Maine)11 mi
  2. 2D-IIISaint Joseph's (ME) Monks Baseball Field — Saint Joseph's (ME) Monks (Standish, Maine)15 mi
  3. 3D-IIINew England Nor'easters Baseball Field — New England Nor'easters (Biddeford, Maine)18 mi
  4. 4D-IIIPickard Baseball Diamond — Bowdoin Polar Bears (Brunswick, Maine)21 mi
  5. 5SummerGoodall Park — Sanford Mainers (Sanford, Maine)30 mi
  6. 6D-IIILeahey Field — Bates Bobcats (Lewiston, Maine)34 mi
  7. 7D-IIICoombs Field — Colby Mules (Waterville, Maine)68 mi
  8. 8D-IIIThomas Terriers Baseball Field — Thomas Terriers (Waterville, Maine)68 mi
  9. 9D-IIIPrescott Field — Maine-Farmington Beavers (Farmington, Maine)69 mi
  10. 10D-IIIParish Field — Plymouth State Panthers (Plymouth, New Hampshire)72 mi

Questions about Delta Dental Park at Hadlock Field

Where do the Portland Sea Dogs play home games?

The Portland Sea Dogs play at Delta Dental Park at Hadlock Field in Portland, Maine.

When did Delta Dental Park at Hadlock Field open?

Delta Dental Park at Hadlock Field opened in 1994.

How many people does Delta Dental Park at Hadlock Field hold?

Delta Dental Park at Hadlock Field has a capacity of about 7,368.

What is the closest MLB stadium to Delta Dental Park at Hadlock Field?

Fenway Park in Boston, Massachusetts, about 99 miles away.

What other ballparks are near Delta Dental Park at Hadlock Field?

Ed Flaherty Field in Gorham is about 11 miles away. See the full list of nearby ballparks on this page.

Facts are for the 2026 season. Distances are straight-line miles between city centers. Capacity figures vary by source and some include lawn seating. See something wrong? Let us know. Is this your ballpark? Get the “Listed on Inside the Park” badge for your website.