Let do some testing. Create a query by pasting the code from your rowsource into the SQL designer in query designer.
SELECT [Tournaments].[TNameDateTime]
FROM Tournaments
WHERE Year([Tournaments].[TDate])="' & Forms!Selection![YearSel] & '";
Open the form and enter the year in the field, make sure you tab past the field so the data is saved in the field.
Next run the query to see if you get results, you may be able to tweak the query in the query designer.
Then you can either use this query as the rowsource, or copy the sql code in the rowsource field.
Let me know! Anthony J. DeSalvo
President - ScottTech Software
"Integrating Technology with Business"