Twenty three pipeline clones along with four check clones were evaluated in a Central Large Scale Trial (CLST) under Phase IV of the Participatory clone evaluation programme of Rubber Research Institute (RRI) of India. The experimental pipeline clones include Wickham x Wickham hybrids, Wickham x Amazonian hybrids, selections from poly cross progenies and ortet selections. The CLST was laid out in 2014 at Research Farm of Rubber Research Institute of India, Kottayam (Kerala, India).The above pipeline clones were evaluated for their growth performance and incidence of abnormal leaf fall (ALF) caused by Phytophthora. Girth was recorded at 150 cm from bud union. ALF incidence was recorded in terms of percentage of leaves retained (leaf retention; LR) after the disease occurrence. Data from the CLST was subjected to ANOVA to find level of significance. There was significant variation for the above traits among the pipeline clones. Mean girth of the experimental clones ranged from 39 to 63 cm with a population mean of 50cm. Overall, the three RRII 400 series check clones classified under Class I of planting material recommendation of Rubber Board viz. RRII 414 (63 cm), RRII 430 (59 cm) and RRII 417 (57 cm) had maximum girth compared to the other popular check clone RRII 105 (50 cm) and pipeline clones. Among pipeline clones, P 129 showed maximum girth of 56 cm, followed by P 181 (55 cm), and PB 330 (53 cm). Ten pipeline clones had better girth than check clone RRII 105. Pipeline clone P 93 (44 cm) and P 173 (39 cm) attained low girth compared to remaining pipeline clones and check clones. Regarding ALF incidence also, there was significant variation in incidence of ALF among the pipeline clones. Leaf retention after ALF infection ranged from 44 to 78 % with a population mean of 60%. Clone RRII 414 (78% LR) followed by RRII 430 (74% LR), P 129 (72% LR) and RRII 417 (71% LR) showed maximum leaf retention compared to all other clones. While RRII 105 (61%) also showed fair level of tolerance to ALF, seven pipeline clones had better leaf retention than the above check clone. Pipeline clone P 73 was most affected by ALF with comparatively low level of leaf retention (44% LR). The above study indicated the emergence of promising pipeline clones in terms of their growth performance and ALF tolerance with potential to possess better yield performance. The above results also reiterated the superiority of RRII 400 series clones in terms of growth performance and disease incidences. The above trial has been opened for tapping in order to assess their yield performance.