CURITIBA, Brazil, Jan 31 (Reuters) - Coritiba goalkeeper Wilson converted a penalty and saved one as his struggling side drew 1-1 at home with Gremio on Sunday.Gremio took the lead through Paulo Miranda with 20 minutes gone but Wilson hammered home his spot kick with 13 minutes remaining to level the scores.Then the big keeper dived to his right to keep out Jean Pyerre’s penalty in the final minute of the match and secure a point for the relegation-threatened club.The result was a blow to Gremio, who are in sixth place in the Serie A table with 52 points, 10 points behind leaders Internacional.Coritiba are second-bottom of the 20-team table, with 28 points, seven off the safety zone. (Reporting by Andrew Downie; Editing by Ken Ferris)