PREVIEW: The Mavs (21-26) host the Detroit Pistons (21-26) on Friday at 7:30 p.m. at American Airlines Center. The game will be televised on FSSW and can also be heard on ESPN 103.3 FM. Additionally, it can be heard on Univision 1270 AM (Spanish). . .This is the second of a three-game home stand for the Mavs. The home stand opened Tuesday when the Mavs snapped a four-game losing streak by upending the Los Angeles Clippers, 106-98. The home stand concludes with Sunday’s 6 p.m. contest against the Toronto Raptors before the Mavs start a three-game road trip Wednesday in New York against the Knicks.