THOMASVILLE, N.C., April 6, 2017 /PRNewswire/ -- Old Dominion Freight Line, Inc. and MLB announced today Old Dominion will be the "Official Freight Carrier for Major League Baseball." The Thomasville, North Carolina headquartered less-than-truckload (LTL) carrier known for its premium service will introduce a fleet of nearly 30,000 trailers with MLB branding and baseball imagery.