=== Duncan carries Spurs to halftime lead ===
 Miami, FL (Sports Network) - Tim Duncan can smell a fifth championship ring.
 Duncan,  the linchpin  in the Spurs' previous four title runs, is playing near
 perfect basketball in a potential closeout Game 6 at American Airlines Arena.
 The  future Hall-of-Famer has  missed just two of his 13 attempts in a monster
 25-point  first half  to guide San Antonio  to a 50-44 lead over the defending
 champion Miami Heat.
 Duncan  also  pulled down  eight rebounds  and scored seven  points on an 11-0
 flurry  to end the half, stunning a home crowd looking to see the Heat force a
 deciding Game 7.
 Kawhi  Leonard  has totaled  10 points and  five rebounds to  make up for Manu
 Ginobili  being  held scoreless  thus far.  Tony Parker is  also being held in
 check with just four points on 2-of-6 shooting.
 Mario  Chalmers has  woken from a three-game slumber and poured in a team-high
 14 points for the Heat, who trail despite hitting 5-of-10 from behind the arc.
 LeBron  James  has logged  nine points and  five assists as  he tries to avoid
 falling  to 1-3  in his Finals career.  Dwyane Wade and Chris Bosh each have a
 quiet six points so far.
 After  the Spurs  pulled out  a  tight series  opener, the  teams have  traded
 blowout victories despite being close games at halftime. San Antonio rolled to
 a  10-point win Sunday  to take a 3-2 series lead and is looking to hand Miami
 consecutive losses for the first time since January.
 A  fast-paced start  was highlighted  by Leonard's  dunk over  Mike Miller  in
 transition, a throw-down that was half stiff-arm, half tomahawk slam.
 There  were five  ties and four lead  changes in the opening quarter, the last
 coming  when  Chalmers capped his 10-point  frame with his second 3-pointer of
 the night to give the Heat a 27-24 lead in the final minute.
 Chalmers,  who shot 4-for-19 from the floor in the three games in San Antonio,
 gave the Heat their biggest lead at 40-33 early in the second quarter.
 That's  when Duncan,  who made his first  eight shots, took over. He went on a
 personal  6-0 run  to pull the Spurs  within one, then rattled in a turnaround
 jumper  in the lane  to tie things at 44-44 with under two minutes left in the
 After  feeding  Duncan for a  dunk, Boris  Diaw put in  two himself on a layup
 before  Leonard's tip-in  just before the buzzer suddenly gave the Spurs their
 biggest lead.
 San  Antonio has made 53 3-pointers in the series to surpass the previous mark
 of 52 set by the Celtics in the 2008 championship round.
 Danny Green pushed his personal Finals 3-point record to 26 with one make thus
 far in Game 6.
 06/18 22:28:34 ET