Bogusevic appeared in 19 games for the Astros last season, but spent most of the season with Triple-A Round Rock where he had 13 homers and 57 RBIs. His contract is for $416,500.
Del Rosario, whose deal is for $417,000, played 11 games combined for Cincinnati and Houston last season and had a 1-1 record with a 4.50 ERA.
Lopez was 5-2 with a 2.96 ERA in 68 relief appearance for Houston last season. His contract is for $442,000.
The 22-year-old Paredes, whose deal is for $414,000, hit .287 with eight homers, 65 RBIs and 50 stolen bases in 133 combined games with two Class A teams last season.