Cecchini was hit by a pitch on the foot May 9 and crumpled into the ground, needing assistance to leave the field.
Patrick Kivlehan popped out to first base and Cody Asche and Johnny Monell both went down swinging, ending the rally as the 51s lost 6-3 in the series opener against Albuquerque on Saturday night at Cashman Field.
Palo Verde senior pitcher Jaret Godman picked up two victories Saturday as the Panthers defeated Centennial 15-0 and 1-0 to claim the Sunset Region baseball title at Shadow Ridge.
Smith takes the roster spot of Jay Bruce, who was placed on the paternity list, and Baumann the spot of reliever Hansel Robles, who was placed on the disabled list.
Logan Taylor made his second spot start of the season for the Las Vegas 51s. He delivered exactly what they needed in a 3-2 win over Fresno at Cashman Field.
Nik Dobar pitched a complete game, and Centennial took advantage of a six-run fourth inning to earn a 10-4 home win over Palo Verde.
Tebow currently has a .430 slugging average, 10 walks and ranks third in the league in strikeouts with 41.
Las Vegas lost its fifth of six games to the Fresno Grizzlies this season, falling 14-4 on Wednesday night at Cashman Field.