Rajon Rondo had the most games by a player in the playoffs in his first playoff, with 26 games.

most nba first round playoff games played
RondoGinobiliJacksonMillerPoweDumasBookerAytonBridgesMcKinnieDiopJamesCassellJohnsonSikmaJohnsonKuzmaCarusoRobinsonHerroLooneyLeeUdrihBurrell262424242323222222222222222222212121212121212121
NAMEGPMPGPPGRPGAPGSPGBPGTPGFGMFGAFG%3PM3PA3P%FTMFTAFT%MINPTSREBASTSTLBLKTOVPF+/-
Rajon RondoRajon Rondo2632.010.24.16.61.70.31.84.110.140.70.20.825.01.82.669.18312661071724584774+62
Manu GinobiliManu Ginobili2427.59.43.82.91.70.41.53.07.738.61.23.038.42.33.175.766022692704193662+191
Stephen JacksonStephen Jackson2433.812.84.12.71.40.42.84.510.941.41.64.733.62.22.880.381130798653396853+47
Oliver MillerOliver Miller2421.47.25.22.10.92.51.83.05.058.70.00.10.01.32.356.45131731245121594276
Leon PoweLeon Powe2311.75.02.70.20.00.10.51.63.249.30.00.01.92.966.7270116624031245+1
Richard DumasRichard Dumas2321.710.92.81.00.90.61.24.78.952.50.00.10.01.62.175.5499251652421132752
Devin BookerDevin Booker2240.427.35.64.50.80.23.79.621.544.72.06.232.16.06.790.58896011241001848176+112
Deandre AytonDeandre Ayton2236.415.811.81.10.81.11.37.010.665.80.00.01.82.473.68013472602518242863+82
Mikal BridgesMikal Bridges2232.111.14.31.61.00.70.74.28.648.41.64.336.81.11.389.3707244943622151641+62
Alfonzo McKinnieAlfonzo McKinnie2210.73.02.30.20.10.00.31.22.744.10.51.531.30.20.540.02356650421632+7
DeSagana DiopDeSagana Diop2218.52.75.00.10.61.30.51.11.861.50.00.00.50.861.140759109214281181+10
Mike JamesMike James228.92.61.21.10.20.00.71.02.439.60.30.642.90.40.756.3195572624501523+24
Sam CassellSam Cassell2221.79.42.74.21.00.22.12.97.339.40.82.037.82.93.486.547820759932154762
Dennis JohnsonDennis Johnson2237.616.14.63.31.01.02.55.513.441.25.17.270.48273541017223235663
Jack SikmaJack Sikma2231.913.78.11.20.80.51.65.211.246.63.24.178.070130117827181135101
Cameron JohnsonCameron Johnson2121.18.23.10.80.90.20.72.65.250.01.63.544.61.41.590.644317266161941528-12
Kyle KuzmaKyle Kuzma2123.010.03.10.80.30.31.03.78.543.01.24.031.31.41.878.44842096517672150+16
Alex CarusoAlex Caruso2124.36.52.32.81.10.61.52.35.442.50.82.927.91.11.480.0510137485923123155+100
Duncan RobinsonDuncan Robinson2128.611.72.81.80.70.30.83.68.442.63.07.439.71.61.886.860024558381461665+25
Tyler HerroTyler Herro2133.616.05.13.70.40.12.05.713.243.32.36.137.52.22.687.070633510777824231+1
Kevon LooneyKevon Looney2118.44.14.20.90.70.40.41.93.454.20.00.10.00.41.038.1387868919148850+57
Courtney LeeCourtney Lee2126.28.01.91.30.90.11.03.27.343.50.62.127.31.11.288.555016939271932042+24
Beno UdrihBeno Udrih2111.53.70.81.00.40.01.01.33.735.90.51.827.00.60.785.7241781722912020+35
Scott BurrellScott Burrell2112.43.82.00.50.90.10.51.53.543.80.31.030.00.50.590.92618043101931133+22
Clifford RobinsonClifford Robinson2118.66.54.11.10.91.11.22.67.235.80.00.20.01.42.555.8391137872319242571