Here is a selected list of Associated Press Poll Rankings for the Portsmouth Trojans for the period of 1951-2020. Some rankings are during the season, while others were the final ranking for the Trojans. This is not an all-inclusive list.
1951: #4 11-2........Final Record 18-4 Lost in Regional Semifinals to Hamilton
1955: #1 12-1........Final Record 20-4 Lost in the Regional Final to Eventual State Runnerup Cincinnati Hughes
1961: #8 12-2........Final Record 22-3 Won the Class AA (Big School) State Championship over Urbana 50-44
1965: #5 12-1........Final Record 17-3 Lost in the District Finals to Athens 65-62
1974: #11 8-2........Final Record 11-8 Lost in the Sectional Opener to Marietta 74-63
1979: #1 18-0........Final Record 21-1 Lost in the District Finals to Ironton 54-52
1984: #9 15-3........Final Record 20-4 Lost in the District Finals to Wheelersburg 73-66 (OT)
1987: #5 18-2........Final Record 22-3 Lost in the Regional Semifinals to New Lebanon Dixie(25-0) 67-59
1988: #2 19-0........Final Record 27-1 Won the very first OHSAA D2 state championship over Chesterland West Geauga 54-47
1991: #6 15-2........Final Record 22-3 Lost in the Regional Finals to Columbus Briggs 70-69
1993: #22 0-5........Final Record 7-16 Lost in the District Semifinals to Gallia Academy
2011: #10 16-4.......Final Record 21-5 Lost in the D3 State Semifinals to Cleveland Central Catholic 58-47
2012: #6 18-2........Final Record 24-3 Lost in the D3 State Championship to Cincinnati Summit Country Day 53-37
2014: #12 15-4.......Final Record 19-5 Lost to Lucasville Valley in D3 District Championship 58-55