Baseball The Dalles 17, David Douglas 6:  The Riverhawks win their second straight game to begin the season.   Softball Newberg 3, The Dalles 1   Track and Field Boys Centennial 68, Hood River Valley 67:  Centennial won the final event, four by 400 meter relay, to win the season-opening dual meet.  Parker Irusta won three events for HRV, while Thomas Morrell III did the same for Centennial.   Girls Hood River Valley 73, Centennial 59:  Jestena Mattson won three events for HRV, while Sascha Bockius won a pair.   Boys Tennis Hood River Valley 7, Gresham 1   Girls Tennis Gresham 7, Hood River Valley 1:  Maddy Graham won the lone match for HRV.