Delta Dental Park at Hadlock Field
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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
- 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
- 1D-IIIEd Flaherty Field — Southern Maine Huskies 11 mi
- 2D-IIISaint Joseph's (ME) Monks Baseball Field — Saint Joseph's (ME) Monks 15 mi
- 3D-IIINew England Nor'easters Baseball Field — New England Nor'easters 18 mi
- 4D-IIIPickard Baseball Diamond — Bowdoin Polar Bears 21 mi
- 5SummerGoodall Park — Sanford Mainers 30 mi
- 6D-IIILeahey Field — Bates Bobcats 34 mi
- 7D-IIICoombs Field — Colby Mules 68 mi
- 8D-IIIThomas Terriers Baseball Field — Thomas Terriers 68 mi
- 9D-IIIPrescott Field — Maine-Farmington Beavers 69 mi
- 10D-IIIParish Field — Plymouth State Panthers 72 mi
Other Eastern League ballparks11
The Portland Sea Dogs share the Eastern League with 11 other teams listed on Inside the Park. Here they are, nearest first.
- 1Double-ADelta Dental Stadium — New Hampshire Fisher Cats 76 mi
- 2Double-ADunkin' Park — Hartford Yard Goats 180 mi
- 3Double-AMirabito Stadium — Binghamton Rumble Ponies 305 mi
- 4Double-ATD Bank Ballpark — Somerset Patriots 309 mi
- 5Double-AFirstEnergy Stadium — Reading Fightin Phils 371 mi
- 6Double-AFNB Field — Harrisburg Senators 412 mi
- 7Double-APeoples Natural Gas Field — Altoona Curve 471 mi
- 8Double-APrince George's Stadium — Chesapeake Baysox 473 mi
- 9Double-AUPMC Park — Erie SeaWolves 507 mi
- 10Double-ACarMax Park — Richmond Flying Squirrels 568 mi
- 11Double-A7 17 Credit Union Park — Akron RubberDucks 602 mi
Questions about Delta Dental Park at Hadlock Field
What other ballparks are in the Eastern League?
11 other Eastern League teams play at parks listed here. The nearest are Delta Dental Stadium, Dunkin' Park, and Mirabito Stadium.
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.