BUENOS AIRES :Boca Juniors moved top of Group A in the Argentine Primera Division Apertura tournament with a 1-0 home win over Barracas Central at La Bombonera stadium on Sunday. Boca thought they had taken the lead through a brilliant volley from Edinson Cavani, but the effort was disallowed for a foul on Barracas goalkeeper Marcos Ledesma. Rodrigo Battaglia gave the hosts the lead five minutes before the break, latching on to a cross from Lautaro Blanco. "We are happy with the win. We enjoy