CREATE TABLE table_72955 ("Name" TEXT, "GP-GS" TEXT, "Solo" FLOAT, "Ast" FLOAT, "Total" FLOAT, "TFL-Yds" TEXT, "No-Yds" TEXT, "BrUp" FLOAT, "QBH" FLOAT, "No.-Yds" TEXT, "Avg" TEXT, "TD" FLOAT, "Long" FLOAT, "Rcv-Yds" TEXT, "FF" FLOAT, "Blkd Kick" FLOAT)

How many tackle assists for the player who averages 23.7?
SELECT "Ast" FROM table_72955 WHERE "Avg" = '23.7'
SELECT "Ast" FROM "table_72955" WHERE "Avg" = '23.7'